WO1995002265A1 - Vorrichtung zur strahlrichtungsstabilen halterung eines zylindrischen laserrohres - Google Patents
Vorrichtung zur strahlrichtungsstabilen halterung eines zylindrischen laserrohres Download PDFInfo
- Publication number
- WO1995002265A1 WO1995002265A1 PCT/EP1994/002203 EP9402203W WO9502265A1 WO 1995002265 A1 WO1995002265 A1 WO 1995002265A1 EP 9402203 W EP9402203 W EP 9402203W WO 9502265 A1 WO9502265 A1 WO 9502265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- laser tube
- base plate
- heat
- rings
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/041—Arrangements for thermal management for gas lasers
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/134—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/43—Fittings, brackets or knuckles
Definitions
- the invention relates to a device for the beam directionally stable mounting of a cylindrical laser tube in the interior of a metallic housing, the interior having a larger diameter than the laser tube and in the end regions of the interior O-rings for mounting the laser tube are fitted and the metallic housing is mounted on a base plate is.
- Cylindrical laser tubes especially for HeNe gas discharge lasers, are now available as ready-to-use, closed units with fused resonator mirrors.
- the currently emitted wavelength of the laser also depends on the distance and the inclination of the mirrors from one another.
- the distance between the mirrors can be controlled by thermal expansion of the laser tube.
- the metallic housing serves as an oven for adjusting the temperature of the laser tube. The heating should not lead to any distortion of the laser tube in order not to change the inclination of the mirrors to one another.
- the direction of the laser beam depends on the mounting of the laser tube in the housing.
- Springs or elastic O-rings are provided for low-stress mounting of the laser tube (DE 2832 117 C2, SIEMENS publication B6-P 8808 "For HeNe laser technology: tubes, modules, power supplies, edition 2, page 10")
- Metallic housings can, however, lead to tension that cannot be absorbed by the O-rings, and heat gradients can also be generated by external heat radiation from the housing or cooling air currents arise in the base plate, which also influence the longitudinal direction stability of the housing and thus the laser beam axis. Shocks to the system can also lead to transverse displacement of the laser tube in the elastic O-rings.
- Lasers of the aforementioned type are e.g. used in coordinate measuring technology. Stabilization of the laser wavelength is a basic requirement for precise length measurements, especially with interferometric methods and accuracies. For angle measurements, especially polar angle measurements, the beam direction stability is of the greatest importance.
- the invention was therefore based on the object of providing the known holder with improved temperature control, low temperature gradients and more stable longitudinal direction mounting of the laser tube.
- a good temperature distribution is achieved by heat conduction.
- the O-rings serve simultaneously as a holder for the laser tube and as a seal for the heat conducting compound.
- the filled mass additionally stabilizes the laser tube against cross-shifting and compensates for temperature gradients.
- Temperature control through heat conduction enables also the removal of heat from the system through cooling elements attached to the outer wall of the housing. Due to the cooling possibility, a temperature control range is also available which is below the ambient temperature, so that the working temperature of the housing serving as an oven can be set to the ambient temperature.
- the connection of the housing to the base plate which is only fixed on one side, permits different thermal expansions between the two components, without this leading to tensioning of the longitudinal axis of the housing.
- Peltier elements that can heat and cool is particularly advantageous. If several Peltier elements are arranged symmetrically on the outer wall of the housing, the size of the individual elements can be kept relatively small. For a given housing length, relatively large heat sinks with outward-facing cooling fins for heat dissipation can then be assigned to the individual elements.
- Fig. 1 shows a cross section through the device
- Fig. 2 is a plan view
- Fig. 3 is a functional diagram of the
- Fig. 1 shows the base plate 1, the housing 2 and the laser tube 3.
- the housing consists e.g. made of aluminum and the laser tube made of glass.
- O-rings 4 are fitted which hold the laser tube 3.
- the housing is also closed at the ends and only has a light exit opening on the right side.
- the space enclosed by the O-rings 4 between the housing 2 and the laser tube 3 is filled with a thermally conductive paste 16.
- the housing 2 has a square cross section, so that the Peltier elements 5 rest on flat surfaces, as can be seen from FIG. 2. Large-area heat sinks 6 are assigned to the Peltier elements.
- the housing 2 is firmly connected to the base plate 1 via a base 7 made of low heat-conducting steel on the light exit side.
- a screw lined with springs 9 holds the foot on the other side. This foot is therefore sliding in a longitudinal guide 8 and can compensate for mutual thermal expansion between base plate 1 and housing 2.
- the housing 2 is provided with a heat-insulating coating 10 and the base plate 1 with an insulation 11.
- the entire structure is surrounded by a jacket in which cooling air is blown from one side via a fan 14, which the heat sink 6 on Keep ambient temperature.
- the control electronics 12 for the laser mode control and the energy supply 13 for the operation of the laser are arranged on the outside of this jacket.
- FIG. 3 shows the basic functional diagram of the wavelength stabilization, specifically using the example of a relatively short laser tube 3, in which only two linearly polarized modes oscillating perpendicular to one another occur under the gain curve of the laser. Both longitudinal modes have a slightly different wavelength, of which only one can be used for interferometric measurements.
- a polarizing beam splitter 15 at the output and outside the laser tube 3 the light of the two modes is separated. The intensity of the beam portion deflected by 90 degrees is measured, A / D converted and used via a microprocessor to control the control current of the Peltier elements 5.
- the microprocessor control is designed so that the outcoupled light intensity is kept constant. In this case, the modes below the gain curve of the laser are advantageously shifted via the operating temperature of the housing 2 in such a way that the intensity of the outcoupled light component is substantially lower than that of the useful light component.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Lasers (AREA)
- Semiconductor Lasers (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE59401043T DE59401043D1 (de) | 1993-07-08 | 1994-07-05 | Vorrichtung zur strahlrichtungsstabilen halterung eines zylindrischen laserrohres |
| KR1019950700829A KR0157196B1 (ko) | 1993-07-08 | 1994-07-05 | 독립 휠서스펜션 |
| CA002143953A CA2143953C (en) | 1993-07-08 | 1994-07-05 | Device for holding a cylindrical laser tube in a stable radiation direction |
| US08/392,748 US5617440A (en) | 1993-07-08 | 1994-07-05 | Device for holding a cylindrical laser tube in a stable radiation direction |
| EP94922261A EP0659302B1 (de) | 1993-07-08 | 1994-07-05 | Vorrichtung zur strahlrichtungsstabilen halterung eines zylindrischen laserrohres |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4322723.6 | 1993-07-08 | ||
| DE4322723A DE4322723C2 (de) | 1993-07-08 | 1993-07-08 | Vorrichtung zur strahlrichtungsstabilen Halterung eines zylindrischen Laserrohres |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995002265A1 true WO1995002265A1 (de) | 1995-01-19 |
Family
ID=6492235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1994/002203 Ceased WO1995002265A1 (de) | 1993-07-08 | 1994-07-05 | Vorrichtung zur strahlrichtungsstabilen halterung eines zylindrischen laserrohres |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5617440A (de) |
| EP (1) | EP0659302B1 (de) |
| JP (1) | JP2735391B2 (de) |
| KR (1) | KR0157196B1 (de) |
| CN (1) | CN1061477C (de) |
| CA (1) | CA2143953C (de) |
| DE (2) | DE4322723C2 (de) |
| WO (1) | WO1995002265A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857989A3 (de) * | 1997-02-11 | 1999-04-21 | Trw Inc. | Montagebühne für optische Systeme |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2836566B2 (ja) * | 1995-12-08 | 1998-12-14 | 日本電気株式会社 | 波長安定化狭帯域エキシマレーザ装置 |
| JP2003142758A (ja) * | 2001-11-01 | 2003-05-16 | Komatsu Ltd | フッ素分子レーザ装置 |
| DE10262017B4 (de) * | 2002-02-22 | 2010-05-06 | Trumpf Laser Gmbh + Co. Kg | Pumplichtquelle für laseraktive Medien |
| US7164703B2 (en) * | 2003-02-20 | 2007-01-16 | Lambda Physik Ag | Temperature control systems for excimer lasers |
| CH697822B1 (de) * | 2005-10-14 | 2009-02-27 | Leica Geosystems Ag | Verfahren zur Frequenzstabilisierung eines Gaslasers und frequenzstabilisierter Glaslaser. |
| JP4406935B2 (ja) * | 2006-03-03 | 2010-02-03 | サンケン電気株式会社 | 放電管用コネクタ及びコネクタ付き放電管 |
| JP5349757B2 (ja) * | 2007-01-22 | 2013-11-20 | 株式会社メガオプト | 固体レーザー発振装置 |
| DE102014006305B4 (de) * | 2014-04-30 | 2017-11-23 | Attocube Systems Ag | Optisches Längenmesssystem mit einem interferometrischen Wegsensor zur Integration in Werkzeugmaschinen und Halbleiter-Lithografiesystemen |
| CN109378683A (zh) * | 2018-10-09 | 2019-02-22 | 苏州紫光伟业激光科技有限公司 | 一种新型的气体激光器 |
| KR102894577B1 (ko) * | 2019-07-03 | 2025-12-02 | 에스이씨 테크놀로지스 에스.알.오. | 온도 변화 동안 레이저 헤드의 편향을 제한하기 위한 방법 및 레이저 헤드 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001798A (en) * | 1977-07-28 | 1979-02-07 | Philips Nv | Gas-discharge laser device |
| EP0316664A1 (de) * | 1987-11-17 | 1989-05-24 | Lasag Ag | Festkörperlaser |
| DE4119027A1 (de) * | 1991-06-10 | 1992-12-17 | Reinhardt Thyzel | Fluidgekuehltes laserrohr fuer einen gaslaser |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1216143A (en) * | 1967-12-18 | 1970-12-16 | Ceskoslovenska Akademie Ved | Method of and device for stabilization of the modulation of a particularly coherent radiation |
| US3619809A (en) * | 1970-07-13 | 1971-11-09 | Hughes Aircraft Co | Sealing arrangement for laser cooling system |
| DE2039947C3 (de) * | 1970-08-11 | 1980-04-17 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Gaslaser |
| US3763442A (en) * | 1972-07-07 | 1973-10-02 | American Laser Corp | Ion laser plasma tube cooling device and method |
| USRE31279E (en) * | 1972-09-26 | 1983-06-14 | Laser optical resonator | |
| US4318056A (en) * | 1978-08-17 | 1982-03-02 | The United States Of America As Represented By The United States Department Of Energy | Excimer laser with fluoropolymer lining |
| US4601038A (en) * | 1982-01-18 | 1986-07-15 | Gte Government Systems Corporation | Conduction cooled solid state laser |
| US4625317A (en) * | 1984-04-12 | 1986-11-25 | Cyonics, Ltd. | Internal mirror laser |
| US4637028A (en) * | 1984-08-02 | 1987-01-13 | Hughes Aircraft Company | Conductively cooled laser rod |
| US4671624A (en) * | 1985-03-25 | 1987-06-09 | Hughes Aircraft Company | Variable lens and birefringence compensator for continuous operation |
| US4953172A (en) * | 1986-12-22 | 1990-08-28 | Thomas R. Gurski | Gas Laser |
| IT1205762B (it) * | 1987-03-20 | 1989-03-31 | Enea | Cavita' per laser fir (far infrared radiation) pompati otticamente con tubo portante |
| CH673177A5 (de) * | 1987-11-17 | 1990-02-15 | Lasag Ag | |
| US4858244A (en) * | 1988-03-24 | 1989-08-15 | Scot, Incorporated | Mechanically actuated laser initiator |
| JPH02310978A (ja) * | 1989-05-25 | 1990-12-26 | Hitachi Ltd | 金属蒸気レーザ装置 |
| US5353293A (en) * | 1993-04-27 | 1994-10-04 | Spectra-Physics Lasers, Inc. | Hybrid cooled ion laser |
-
1993
- 1993-07-08 DE DE4322723A patent/DE4322723C2/de not_active Expired - Fee Related
-
1994
- 1994-07-05 DE DE59401043T patent/DE59401043D1/de not_active Expired - Fee Related
- 1994-07-05 KR KR1019950700829A patent/KR0157196B1/ko not_active Expired - Lifetime
- 1994-07-05 JP JP7503822A patent/JP2735391B2/ja not_active Expired - Lifetime
- 1994-07-05 WO PCT/EP1994/002203 patent/WO1995002265A1/de not_active Ceased
- 1994-07-05 CN CN94190484A patent/CN1061477C/zh not_active Expired - Lifetime
- 1994-07-05 EP EP94922261A patent/EP0659302B1/de not_active Expired - Lifetime
- 1994-07-05 CA CA002143953A patent/CA2143953C/en not_active Expired - Lifetime
- 1994-07-05 US US08/392,748 patent/US5617440A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001798A (en) * | 1977-07-28 | 1979-02-07 | Philips Nv | Gas-discharge laser device |
| EP0316664A1 (de) * | 1987-11-17 | 1989-05-24 | Lasag Ag | Festkörperlaser |
| DE4119027A1 (de) * | 1991-06-10 | 1992-12-17 | Reinhardt Thyzel | Fluidgekuehltes laserrohr fuer einen gaslaser |
Non-Patent Citations (1)
| Title |
|---|
| A.SASAKI: "A SIMPLE METHOD FOR SINGLE-FREQUENCY OPERATION AND AMPLITUDE AND FREQUENCY-STABILIZATION OF AN INTERNAL-MIRROR He-Ne LASER", JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 22, no. 10, October 1983 (1983-10-01), TOKYO JP, pages 1538 - 1542 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0857989A3 (de) * | 1997-02-11 | 1999-04-21 | Trw Inc. | Montagebühne für optische Systeme |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4322723A1 (de) | 1995-01-12 |
| CN1112383A (zh) | 1995-11-22 |
| US5617440A (en) | 1997-04-01 |
| EP0659302B1 (de) | 1996-11-13 |
| DE59401043D1 (de) | 1996-12-19 |
| DE4322723C2 (de) | 1995-05-18 |
| KR0157196B1 (ko) | 1998-12-01 |
| CA2143953C (en) | 2004-09-07 |
| EP0659302A1 (de) | 1995-06-28 |
| CA2143953A1 (en) | 1995-01-19 |
| JPH08505012A (ja) | 1996-05-28 |
| CN1061477C (zh) | 2001-01-31 |
| JP2735391B2 (ja) | 1998-04-02 |
| KR950703218A (ko) | 1995-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0659302B1 (de) | Vorrichtung zur strahlrichtungsstabilen halterung eines zylindrischen laserrohres | |
| DE69605031T2 (de) | Temperaturregulierende laserdiodenbaugruppe | |
| DE2737345C2 (de) | Halbleiterlaser-Vorrichtung mit einem Peltier-Element | |
| US4951740A (en) | Bellows heat pipe for thermal control of electronic components | |
| EP0015997B1 (de) | Kühleinrichtung für verlustwärmeerzeugende elektrische und/oder elektronische bauelemente | |
| EP2041847A2 (de) | Festkörperlaser mit einem monolithisch aufgebauten resonator | |
| EP1892810B1 (de) | Kühleinrichtung für ein elektrisches Betriebsmittel | |
| EP0427229A2 (de) | Laser | |
| EP0214464A1 (de) | Gehäuse für ein optoelektronisches Schaltungsmodul | |
| DE2417106A1 (de) | Thyristorsaeule | |
| CH615553A5 (de) | ||
| DE19852284C2 (de) | Kleiner CO¶2¶-Slablaser | |
| WO2009067985A1 (de) | Anordnung mit einem licht emittierendem modul und einem flexiblen leitungsträger | |
| AT411126B (de) | Halbleitermodul | |
| DE60309801T2 (de) | Mikrolaser mit Frequenzverdopplung im Resonator und Justage durch Drehen von Elementen | |
| EP0285398A3 (de) | Ein Resonator-Modul und ein Pump-Modul enthaltende Struktur | |
| EP0338113B1 (de) | Verfahren zur Adaption einer zweistufigen Refrigerator-Kryopumpe auf ein betimmtes Gas | |
| DE19515704C2 (de) | Gekühlter diodengepumpter Festkörperlaser | |
| EP4202296B1 (de) | Kühlvorrichtung für eine wärmequelle und wärmequellenanordnung | |
| JP7475755B2 (ja) | レーザベースプレートの温度を均一化するための方法及び装置 | |
| CH377941A (de) | Anordnung zur Ableitkühlung einer wärmemässig stark belasteten Elektrode einer Elektronenröhre in einem Hochfrequenzgerät | |
| DE102024001236A1 (de) | Modulare Funktionseinheit zum Anschluss von elektronischen Hochleistungsbauteilen | |
| EP1256264A1 (de) | Kühlvorrichtung | |
| AT210024B (de) | Anordnung zur Ableitkühlung einer wärmemäßig stark belasteten Elektrode von Elektronenröhren | |
| DE102022116486A1 (de) | Laserbearbeitungskopf mit einem zweiphasigen geschlossenen wärmetauscher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA CN JP KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1994922261 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2143953 Country of ref document: CA |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 08392748 Country of ref document: US |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWP | Wipo information: published in national office |
Ref document number: 1994922261 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1994922261 Country of ref document: EP |