WO2006117863A1 - フォトニック結晶レーザ - Google Patents
フォトニック結晶レーザ Download PDFInfo
- Publication number
- WO2006117863A1 WO2006117863A1 PCT/JP2005/008173 JP2005008173W WO2006117863A1 WO 2006117863 A1 WO2006117863 A1 WO 2006117863A1 JP 2005008173 W JP2005008173 W JP 2005008173W WO 2006117863 A1 WO2006117863 A1 WO 2006117863A1
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- WO
- WIPO (PCT)
- Prior art keywords
- photonic crystal
- laser
- active layer
- crystal laser
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
- B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
- B41J2/45—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode [LED] or laser arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04252—Electrodes, e.g. characterised by the structure characterised by the material
- H01S5/04253—Electrodes, e.g. characterised by the structure characterised by the material having specific optical properties, e.g. transparent electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04256—Electrodes, e.g. characterised by the structure characterised by the configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/185—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only horizontal cavities, e.g. horizontal cavity surface-emitting lasers [HCSEL]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S2301/00—Functional characteristics
- H01S2301/18—Semiconductor lasers with special structural design for influencing the near- or far-field
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0428—Electrical excitation ; Circuits therefor for applying pulses to the laser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
- H01S5/06233—Controlling other output parameters than intensity or frequency
- H01S5/06243—Controlling other output parameters than intensity or frequency controlling the position or direction of the emitted beam
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/11—Comprising a photonic bandgap structure
Definitions
- the present invention relates to a laser element and a laser apparatus that can be suitably used for various apparatuses that need to scan laser light, such as a laser printer and a barcode reader.
- Laser printers, bar code readers, and the like scan laser light for printing and reading.
- a laser scanning device in a conventional laser printer will be described with reference to FIG.
- the laser beam output from the semiconductor laser 11 is reflected on the side surface of the rotating polygon mirror 12 and passes through the f- ⁇ lens 13 to irradiate the photosensitive drum 14. While one side surface of the polygon mirror 1 2 is irradiated with the laser beam, the laser beam irradiation point (laser beam spot) is rotated from one end 151 of the photosensitive drum 14 to the other by the rotation of the polygon mirror 12. Move continuously to the end 152 of When the laser beam spot reaches the other end 152, the reflection position of the laser beam on the polygon mirror 12 is exactly the side edge.
- the reflection position of the laser beam becomes the start end of the next side surface, whereby the laser beam spot on the photosensitive drum 14 also returns to the one end 151.
- laser light is irradiated onto the photosensitive drum 14 while being repeatedly scanned, and during that time, the laser light is turned on / off to print characters and images.
- the speed of the laser beam spot that scans on the photosensitive drum 14 is determined by the rotational speed of the polygon mirror.
- the speed of the laser beam spot that scans on the photosensitive drum 14 is determined by the rotational speed of the polygon mirror.
- Patent Document 1 describes a configuration using a laser light source in which a plurality of surface-emitting vertical cavity semiconductor lasers (VCSEL) are arranged in an array as a configuration for further increasing the scanning speed.
- VCSEL surface-emitting vertical cavity semiconductor lasers
- scanning speed is increased by simultaneously irradiating laser light from multiple VCSELs.
- a polygon mirror is essential for scanning where it is difficult to give the VCSEL itself the ability to move the beam, and the output of the single-mode VCSEL is There is a problem that it is limited to 3mW @ degree.
- a photonic crystal is obtained by artificially forming a periodic structure in a dielectric.
- the periodic structure is generally formed by periodically providing a region having a refractive index different from that of the dielectric body in the body. Due to the periodic structure, Bragg diffraction occurs in the crystal, and an energy band gap is formed with respect to the energy of light.
- Patent Document 2 describes a laser light source using a two-dimensional photonic crystal.
- This laser light source has an active layer containing a light emitting material between two electrodes (conductive semiconductor layers), and a two-dimensional photonic crystal is formed above the active layer.
- This two-dimensional photonic crystal is a plate-like member (slab) provided with a two-dimensional periodic refractive index distribution. Active layer force light emission is caused by the injection of carriers with electrode force, and this light is intensified by diffraction due to the periodic structure of the two-dimensional photonic crystal, thereby causing laser oscillation. When the period of this periodic structure matches the wavelength in the medium, light is emitted in a direction perpendicular to the slab surface. With this laser light source, it is possible to obtain light emission with a higher output than VCSEL.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-020995 ([0012], FIG. 2)
- Patent Document 2 JP 2000-332351 A ([0037] to [0056], FIG. 1)
- the problem to be solved by the present invention is to provide a laser element and a laser apparatus that can scan a high-power laser beam at high speed without using a mechanical scanning mechanism. is there.
- the second aspect of the photonic crystal laser element according to the present invention is:
- a photonic crystal laser device includes the photonic crystal laser element, voltage applying means for applying a voltage between the upper electrode and the lower electrode, and the plurality of upper electrodes or lower electrodes arranged in a row. And a control means for controlling ON / OFF of the applied voltage.
- the photonic crystal laser element according to the present invention has an active layer and a two-dimensional photonic crystal. This is the same as the laser disclosed in Patent Document 2.
- the active layer and the two-dimensional photonic crystal do not need to be in direct contact with each other, and a sufficient feedback effect can be obtained even if a layer such as a spacer is interposed between the active layer and the two-dimensional photonic crystal.
- the active layer generates light having a predetermined wavelength by charge injection.
- the material for the active layer for example, the same material as that conventionally used for a Fabry-Perot type laser light source can be used.
- a two-dimensional photonic crystal is generally formed by periodically arranging a number of regions having the same shape with different refractive indexes on a slab-shaped base material.
- This period includes a triangular lattice shape, a square lattice shape, a hexagonal lattice shape, and the like.
- the period is set according to the wavelength of light emission in the active layer. The period is usually the same as the emission wavelength.
- a lower electrode and an upper electrode are provided so as to sandwich the active layer and the two-dimensional photonic crystal. Another layer is inserted between the active layer and the lower electrode! /!
- a plurality of upper electrodes are arranged side by side above the two-dimensional photonic crystal.
- the arrangement of the upper electrodes may be linear (one-dimensional)! /, Or may be arranged two-dimensionally, such as a square lattice or a triangular lattice.
- another layer may be interposed between the two-dimensional photonic crystal and the upper electrode. For example, place a layered member between two-dimensional photonic crystals and place the upper electrode on top of it.
- a plurality of lower electrodes provided below the active layer may be provided corresponding to the upper electrodes, but one common lower electrode may be provided for the plurality of upper electrodes.
- Another layer is also inserted between the lower electrode and the active layer! /. In the active layer, it is desirable that the lower electrode or the intervening layer reflect this light so that the light generated in the active layer does not leak outside from the lower electrode side!
- a photonic crystal laser device is configured by providing a voltage applying unit and a control unit in the element configured as described above.
- the voltage applying means applies a voltage between the upper electrode and the lower electrode, and a normal DC power supply can be used.
- the control means controls ON / OFF of the applied voltage for each upper electrode. Of each upper electrode
- the ON / OFF timing may be appropriately determined according to the use of the photonic crystal laser as in the example shown later.
- the photonic crystal laser element and the laser light source of the present invention since a plurality of upper electrodes are provided, it is possible to realize an operation not found in conventional lasers.
- the light emission region is switched by controlling ON / OFF of the applied voltage for each upper electrode by the control means, so that the laser beam can be apparently moved.
- the laser device it is desirable to use a material that is transparent to light of the wavelength for the upper electrode in order to extract the upper electrode side force laser light.
- the laser light is radiated to the outside almost perpendicularly from the light emitting region, so that the emission range of the laser light is only within the full length (or full width) of the element. Therefore, when it is desired to radiate to a wider range, it is desirable to provide means (deflecting means) for changing the direction of the laser light output near the upper electrode on the upper electrode.
- the deflecting unit include a lens that covers the entire element, a prism provided for each element, and the like.
- the photonic crystal laser device and laser device of the first aspect in which a plurality of upper electrodes are arranged side by side have been described. However, a plurality of lower electrodes may be arranged in place of the upper electrode. .
- This is the photonic crystal laser element and laser of the second aspect Device. In this case, it is sufficient to provide one upper electrode in common for a plurality of or all lower electrodes.
- the laser beam is radiated to the outside of the upper electrode force directly above a certain range around the lower electrode.
- the operations of the photonic crystal laser element and laser device of the second aspect are the same as those of the first aspect.
- the photonic crystal In the photonic crystal, light having a wavelength corresponding to the periodic structure of the photonic crystal is amplified. Therefore, by changing the periodic structure in the photonic crystal depending on the position in the crystal, The wavelength of the laser beam can be tuned.
- laser light can be moved by ON / OFF of a voltage applied to a plurality of upper electrodes or lower electrodes arranged without using a mechanical scanning mechanism. . Since the scanning speed of the laser beam is not limited by the speed of the mechanical scanning mechanism, it can be made faster than before. Further, since a photonic crystal laser capable of emitting light at a high output is used, the intensity of the obtained laser beam can be sufficiently increased.
- the photonic crystal laser of the present invention has such features, it can be suitably used for a laser beam scanning device in a laser printer, a barcode reader, or the like. Also
- the configuration of the present invention can be applied to photonic crystal lasers of various wavelengths, for example, by attaching two-dimensional electrodes to the three primary colors of blue-green and red, and scanning each light on a screen or the like, Application to full-color displays is also possible.
- FIG. 1 is a schematic configuration diagram of a laser scanning device in a conventional laser printer using a polygon mirror.
- FIG. 2 is a perspective view of one embodiment of a photonic crystal laser element according to the present invention.
- FIG. 3 is a schematic configuration diagram showing a photonic crystal laser device of the present example.
- FIG. 4 is a top view showing the operation of the photonic crystal laser device of this example.
- FIG. 5 is a top view showing an example of simultaneously scanning a plurality of light emitting regions (laser beam).
- FIG. 6 is a vertical sectional view showing a photonic crystal laser element provided with means for changing the direction of laser light for each upper electrode.
- FIG. 7 is a perspective view of another embodiment of the photonic crystal laser element according to the present invention.
- FIG. 8 is a plan view for explaining the operation of the photonic crystal laser element in FIG.
- FIG. 9 is a perspective view of another embodiment of the photonic crystal laser element according to the present invention.
- FIG. 10 is a schematic configuration diagram of a laser scanning device in a laser printer using a photonic crystal laser according to the present invention.
- the two-dimensional photonic crystal 23 is formed by periodically arranging holes 24 in a square lattice pattern on a plate material having GaAs force.
- the lower spacer 22 and the two-dimensional photonic crystal 23 are formed as a single layer, and a hole 24 is formed only in the upper portion to function as the two-dimensional photonic crystal 23.
- the lower part functions as the lower spacer 22.
- a confinement layer 25 made of GaAs a lower cladding layer 26 made of n-type aluminum 'gallium arsenide (AlGaAs), and a lower substrate made of n-type GaAs are provided in order from the side closer to this layer.
- This lower substrate is mechanically polished to a thickness of about 100 microns at 50 forces, and then gold, germanium, and nickel are deposited and heated to about 400 ° C to form an alloy, thereby forming the lower electrode 27. .
- An upper spacer 28 made of GaAs, an upper clad layer 29 made of p-type AlGaAs, and a contact layer 30 made of p-type GaAs are provided on the upper side of the two-dimensional photonic crystal 23 in order from the side closer to this layer. .
- Each of these layers can be manufactured by a method similar to the method described in Patent Document 2.
- a large number of upper electrodes 33 are arranged in a straight line on the contact layer 30.
- the planar shape of the upper electrode 33 is a rectangle that is long in the direction perpendicular to the arrangement direction.
- gold can be used as the material of the upper electrode 33.
- An electrode using gold can minimize current loss and can be easily manufactured, for example, by vapor deposition.
- a transparent electrode having a carrier-doped zinc oxide (ZnO) or the like may be used as the upper electrode 33. By using such a transparent electrode, a larger amount of light can be extracted outside.
- each upper electrode 33 is connected in parallel to a DC power source, and each upper electrode 33 is provided with a switch 34 that also has a transistor equal force.
- a control unit 35 for controlling ON / OFF of these switches 34 is provided.
- the photonic crystal laser device is configured.
- the photonic crystal laser device of this example will be described with reference to FIG. First, out of the multiple upper electrodes 33, four electrodes 331 to 334 at one end are used as one set. A current is introduced by applying a voltage between these and the lower electrode. As a result, carriers are injected into the active layer 21 directly below and around these four upper electrodes 331 to 334, and light is generated in that region. This light is also introduced into the two-dimensional photonic crystal 23, where it is diffracted and amplified to oscillate. The two-dimensional photonic crystal 23 is formed inside the region 42. This laser light is emitted in a direction perpendicular to the surface of the photonic crystal 23 and emitted from the contact layer 30 to the outside. At this time, as shown in FIG.
- each upper electrode 331 to 334 is perpendicular to the arrangement direction.
- the light emitting region 411 has a shape close to a square because the region into which the current is introduced has a rectangular shape and the region into which the current is introduced has a shape close to a square.
- the introduction of current to the leftmost upper electrode 331 among the four electrodes is turned OFF, and at the same time, current is introduced to the upper electrode 335 adjacent to the right side thereof (FIG. 4 ( b)).
- the light emitting region moves from 411 to 412.
- the light emitting region can be moved in the arrangement direction of the upper electrodes 33 by controlling the switches of the upper electrodes by the control unit 35 and sequentially switching the upper electrodes to which current is introduced.
- the light emitting region moves substantially continuously toward the right end of the left end force of the element, and when it reaches the right end of the element, returns to the left end of the element and the left end force again moves substantially continuously toward the right end. Repeat the operation. This operation is the same as the laser beam scanning in the laser printer shown in FIG.
- the number of upper electrodes to which current is simultaneously introduced is not limited to the four shown above.
- the current may be introduced into only one upper electrode at a time.
- the light emitting area when the light emitting area reaches the right end, the light emitting area is controlled so that it immediately returns to the left end of the element. However, depending on the application, the light emitting area reaches the right end and then the right end to the left end. You may move it back in the opposite direction.
- one light emitting region 511 may be formed as described above, and at the same time, a light emitting region 512 may be formed at a position away from the light emitting region 511. Similarly, 3 or more The upper light emitting region may be formed at the same time. By scanning these light emitting areas simultaneously, it is possible to scan within a predetermined area in a shorter time than when scanning one light emitting area.
- the shape of the upper electrode 33 is not limited to a rectangle that is long in the direction perpendicular to the arrangement direction as described above, and may be, for example, a square.
- the electrodes may be arranged in a two-dimensional form, and one or a plurality of beams may be scanned in various directions at the same time.
- FIG. 6 shows an example in which means for changing (deflecting) the direction of the laser beam is provided for each upper electrode 33.
- one lens 61 is provided on the upper side of the photonic crystal laser element so as to cover the entire upper electrode 33.
- the laser light emission range is expanded in the arrangement direction of the upper electrodes 33, and the laser light irradiation range (scanning range) can be widened while downsizing the photonic crystal laser element.
- the photonic crystal laser element and the photonic crystal laser apparatus of the present invention are not limited to the above examples.
- the upper electrode 33 may be two-dimensionally arranged.
- the light emitting region can be scanned two-dimensionally by switching the upper electrode 33 for injecting current in the order indicated by the arrows in FIG. 8 (a).
- FIG. 8 (b) by switching the upper electrode 33 for injecting current for each column of the upper electrode 33, a plurality of laser beams can be scanned simultaneously.
- the upper electrode 33 may be formed as a single sheet, and a plurality of lower electrodes 32 may be formed on the substrate 31.
- This photonic crystal laser element also operates in the same manner as in the above embodiment.
- FIG. 10 shows an example in which the photonic crystal laser element according to the present invention is used in a light source unit of a laser printer.
- a photonic crystal laser element 71 having the same length as the effective print width of the photosensitive drum 73 is manufactured and arranged facing the photosensitive drum 73.
- the upper electrode can be made sufficiently small (in the above example, the pitch is about 20 m), and laser oscillation must be performed.
- a photonic crystal laser element 72 that is shorter than the effective printing width of the photosensitive drum 73 but has the same number of upper electrodes is manufactured, and the photosensitive drum 73 is Place them facing each other.
- the size (length) of the photonic crystal laser element 72 is 1/10 of the effective printing width of the photosensitive drum 73 (2.54 cm in the above example)
- the arrangement pitch of the upper electrodes is about 2 m. This force is sufficiently possible if a short wavelength laser is used.
- the photonic crystal laser element force since the photonic crystal laser element force also emits laser light in a wide range, as shown in FIG. 6, the force to place the lens 61 on the photonic crystal laser element or the photonic crystal laser element Separately, a lens 74 is provided between the photonic crystal laser element light source and the photosensitive drum 73.
- the emission of laser light is controlled as described above by ON / OFF control of voltage application to each upper electrode of the photonic crystal laser element light source.
- the laser beam is scanned in the same manner as a conventional laser printer. As described above, since scanning can be performed electronically without using a polygon mirror, printing at a very high speed can be performed.
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- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Semiconductor Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2005/008173 WO2006117863A1 (ja) | 2005-04-28 | 2005-04-28 | フォトニック結晶レーザ |
| US11/919,344 US7860141B2 (en) | 2005-04-28 | 2005-04-28 | Photonic crystal laser |
| EP05737342A EP1879272A4 (en) | 2005-04-28 | 2005-04-28 | PHOTONIC CRYSTAL LASER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2005/008173 WO2006117863A1 (ja) | 2005-04-28 | 2005-04-28 | フォトニック結晶レーザ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006117863A1 true WO2006117863A1 (ja) | 2006-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/008173 Ceased WO2006117863A1 (ja) | 2005-04-28 | 2005-04-28 | フォトニック結晶レーザ |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7860141B2 (ja) |
| EP (1) | EP1879272A4 (ja) |
| WO (1) | WO2006117863A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008117562A1 (ja) * | 2007-03-23 | 2008-10-02 | Sumitomo Electric Industries, Ltd. | フォトニック結晶レーザおよびフォトニック結晶レーザの製造方法 |
| US20090074024A1 (en) * | 2007-08-31 | 2009-03-19 | Japan Science And Technology Agency | Photonic crystal laser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008054217A1 (de) * | 2008-10-31 | 2010-05-06 | Osram Opto Semiconductors Gmbh | Optoelektronischer Halbleiterchip und Verfahren zur Herstellung eines optoelektronischen Halbleiterchips |
| WO2012082523A2 (en) | 2010-12-16 | 2012-06-21 | California Institute Of Technology | Chemically-etched nanostructures and related devices |
| JP5850366B2 (ja) | 2011-12-06 | 2016-02-03 | 国立大学法人京都大学 | 半導体レーザ素子及びレーザビーム偏向装置 |
| US9088133B2 (en) * | 2012-02-28 | 2015-07-21 | Kyoto University | Two-dimensional photonic crystal surface emitting laser |
| JP2014027264A (ja) * | 2012-06-22 | 2014-02-06 | Canon Inc | 面発光レーザ |
| DE102014119435B4 (de) * | 2014-07-23 | 2017-03-23 | Beijing Lenovo Software Ltd. | Elektronikgerät und Datenverarbeitungsverfahren |
| JP6329893B2 (ja) | 2014-12-24 | 2018-05-23 | 浜松ホトニクス株式会社 | 半導体レーザ装置 |
| US11728621B2 (en) * | 2019-06-05 | 2023-08-15 | Stmicroelectronics (Research & Development) Limited | Voltage controlled steered VCSEL driver |
| US11579290B2 (en) | 2019-06-05 | 2023-02-14 | Stmicroelectronics (Research & Development) Limited | LIDAR system utilizing multiple networked LIDAR integrated circuits |
| US20230163566A1 (en) * | 2020-03-31 | 2023-05-25 | Kyoto University | Two-dimensional photonic-crystal laser |
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| JP4185697B2 (ja) | 2002-03-14 | 2008-11-26 | 独立行政法人科学技術振興機構 | 2次元フォトニック結晶面発光レーザアレイ及び2次元フォトニック結晶面発光レーザ |
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- 2005-04-28 WO PCT/JP2005/008173 patent/WO2006117863A1/ja not_active Ceased
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008117562A1 (ja) * | 2007-03-23 | 2008-10-02 | Sumitomo Electric Industries, Ltd. | フォトニック結晶レーザおよびフォトニック結晶レーザの製造方法 |
| US8155163B2 (en) | 2007-03-23 | 2012-04-10 | Sumitomo Electric Industries, Ltd. | Photonic crystal laser and method of manufacturing photonic crystal laser |
| US20090074024A1 (en) * | 2007-08-31 | 2009-03-19 | Japan Science And Technology Agency | Photonic crystal laser |
| JP2009076900A (ja) * | 2007-08-31 | 2009-04-09 | Japan Science & Technology Agency | フォトニック結晶レーザ |
| US8284814B2 (en) * | 2007-08-31 | 2012-10-09 | Japan Science And Technology Agency | Photonic crystal laser |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1879272A4 (en) | 2008-06-18 |
| EP1879272A1 (en) | 2008-01-16 |
| US20090034566A1 (en) | 2009-02-05 |
| US7860141B2 (en) | 2010-12-28 |
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