US2974568A - Light modulator - Google Patents

Light modulator Download PDF

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Publication number
US2974568A
US2974568A US640481A US64048157A US2974568A US 2974568 A US2974568 A US 2974568A US 640481 A US640481 A US 640481A US 64048157 A US64048157 A US 64048157A US 2974568 A US2974568 A US 2974568A
Authority
US
United States
Prior art keywords
garnet
light
iron
yttrium
magnetic
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.)
Expired - Lifetime
Application number
US640481A
Other languages
English (en)
Inventor
Jr Joseph F Dillon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Inc
Original Assignee
Bell Telephone Laboratories Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US640481A priority Critical patent/US2974568A/en
Priority to FR1191330D priority patent/FR1191330A/fr
Priority to NL224012A priority patent/NL109103C/xx
Priority to GB4438/58A priority patent/GB844799A/en
Application granted granted Critical
Publication of US2974568A publication Critical patent/US2974568A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2641—Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2675—Other ferrites containing rare earth metals, e.g. rare earth ferrite garnets
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Soft Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
US640481A 1957-02-15 1957-02-15 Light modulator Expired - Lifetime US2974568A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US640481A US2974568A (en) 1957-02-15 1957-02-15 Light modulator
FR1191330D FR1191330A (fr) 1957-02-15 1957-12-13 Dispositif modulateur de lumière
NL224012A NL109103C (2) 1957-02-15 1958-01-14
GB4438/58A GB844799A (en) 1957-02-15 1958-02-11 Improvements in or relating to light controlling devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US640481A US2974568A (en) 1957-02-15 1957-02-15 Light modulator

Publications (1)

Publication Number Publication Date
US2974568A true US2974568A (en) 1961-03-14

Family

ID=24568430

Family Applications (1)

Application Number Title Priority Date Filing Date
US640481A Expired - Lifetime US2974568A (en) 1957-02-15 1957-02-15 Light modulator

Country Status (4)

Country Link
US (1) US2974568A (2)
FR (1) FR1191330A (2)
GB (1) GB844799A (2)
NL (1) NL109103C (2)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129410A (en) * 1959-08-25 1964-04-14 Ibm Electron spin echo memory system
US3153146A (en) * 1959-06-19 1964-10-13 Westinghouse Electric Corp Thermal imaging device using a target which rotates the plane of polarization
US3156651A (en) * 1962-03-28 1964-11-10 Bell Telephone Labor Inc Light transparent ferrimagnetic garnets
US3177770A (en) * 1961-10-17 1965-04-13 J D Herrebaudt Light modulation by microwaves
US3200698A (en) * 1960-09-22 1965-08-17 Nat Res Dev Measurement of distance by means of modulated polarized light
US3204104A (en) * 1962-07-02 1965-08-31 Gen Telephone & Elect Single-sideband light modulator
US3234390A (en) * 1962-01-12 1966-02-08 J D Herrebaudt Communication with light contrast modulation
US3234494A (en) * 1961-07-28 1966-02-08 Bell Telephone Labor Inc Ferromagnetic compound and devices including elements thereof
US3239670A (en) * 1961-11-17 1966-03-08 Bloembergen Nicolaas Microwave modulation of optical radiation in a waveguide
US3245314A (en) * 1962-06-28 1966-04-12 Bell Telephone Labor Inc Optical rotation devices employing a ferromagnetic chromium trihalide
US3259015A (en) * 1962-04-30 1966-07-05 Bell Telephone Labor Inc Multiple reflection optical wave modulator
US3316050A (en) * 1963-08-09 1967-04-25 Bell Telephone Labor Inc Optical modulator employing the dichroic absorption of antiferromagnetic nif2
US3324393A (en) * 1963-07-26 1967-06-06 Gen Electric Magneto-optical electric current sensing arrangement
US3492061A (en) * 1965-06-18 1970-01-27 Bell Telephone Labor Inc Light beam deflector in which the light is diffracted by magnetic waves
US3512867A (en) * 1967-05-18 1970-05-19 Philips Corp Magneto-optical digital light deflection device
US3526850A (en) * 1966-03-23 1970-09-01 Bell Telephone Labor Inc Solid state laser
US3659111A (en) * 1969-04-11 1972-04-25 Bp Chem Int Ltd Twin beam radiation analyser using radiation choppers
FR2786888A1 (fr) * 1998-12-07 2000-06-09 Murata Manufacturing Co Dispositif de modulation de lumiere et dispositif de filtrage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120738B (de) * 1960-02-09 1961-12-28 Akad Wissenschaften Ddr Polarisationsmikroskop

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US581815A (en) * 1897-05-04 eaton
US2109540A (en) * 1931-06-06 1938-03-01 Le Roy J Leishman Means and method of coloring lightformed images
US2451732A (en) * 1944-06-15 1948-10-19 Rca Corp Microwave-absorptive gas light valve
US2675740A (en) * 1954-04-20 Glare preventing device and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US581815A (en) * 1897-05-04 eaton
US2675740A (en) * 1954-04-20 Glare preventing device and method
US2109540A (en) * 1931-06-06 1938-03-01 Le Roy J Leishman Means and method of coloring lightformed images
US2451732A (en) * 1944-06-15 1948-10-19 Rca Corp Microwave-absorptive gas light valve

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153146A (en) * 1959-06-19 1964-10-13 Westinghouse Electric Corp Thermal imaging device using a target which rotates the plane of polarization
US3129410A (en) * 1959-08-25 1964-04-14 Ibm Electron spin echo memory system
US3200698A (en) * 1960-09-22 1965-08-17 Nat Res Dev Measurement of distance by means of modulated polarized light
US3234494A (en) * 1961-07-28 1966-02-08 Bell Telephone Labor Inc Ferromagnetic compound and devices including elements thereof
US3177770A (en) * 1961-10-17 1965-04-13 J D Herrebaudt Light modulation by microwaves
US3239670A (en) * 1961-11-17 1966-03-08 Bloembergen Nicolaas Microwave modulation of optical radiation in a waveguide
US3234390A (en) * 1962-01-12 1966-02-08 J D Herrebaudt Communication with light contrast modulation
US3156651A (en) * 1962-03-28 1964-11-10 Bell Telephone Labor Inc Light transparent ferrimagnetic garnets
US3259015A (en) * 1962-04-30 1966-07-05 Bell Telephone Labor Inc Multiple reflection optical wave modulator
US3245314A (en) * 1962-06-28 1966-04-12 Bell Telephone Labor Inc Optical rotation devices employing a ferromagnetic chromium trihalide
US3204104A (en) * 1962-07-02 1965-08-31 Gen Telephone & Elect Single-sideband light modulator
US3324393A (en) * 1963-07-26 1967-06-06 Gen Electric Magneto-optical electric current sensing arrangement
US3316050A (en) * 1963-08-09 1967-04-25 Bell Telephone Labor Inc Optical modulator employing the dichroic absorption of antiferromagnetic nif2
US3492061A (en) * 1965-06-18 1970-01-27 Bell Telephone Labor Inc Light beam deflector in which the light is diffracted by magnetic waves
US3526850A (en) * 1966-03-23 1970-09-01 Bell Telephone Labor Inc Solid state laser
US3512867A (en) * 1967-05-18 1970-05-19 Philips Corp Magneto-optical digital light deflection device
US3659111A (en) * 1969-04-11 1972-04-25 Bp Chem Int Ltd Twin beam radiation analyser using radiation choppers
FR2786888A1 (fr) * 1998-12-07 2000-06-09 Murata Manufacturing Co Dispositif de modulation de lumiere et dispositif de filtrage

Also Published As

Publication number Publication date
FR1191330A (fr) 1959-10-19
NL109103C (2) 1964-08-17
GB844799A (en) 1960-08-17

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