US3661441A
Expired / Lapsed
US
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Arrangement for acousto-optical light deflection
Assignee: NTT Inc
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Filing: 1970-10-27
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Granted: 1972-05-09
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Expires: 1990-10-27
Abstract
Abstract There has been disclosed a novel use of single crystal paratellurite, that is, tellurium dioxide TeO2 as a medium for acousto-optical light deflection. The light deflecting medium of the present invention enables light and ultrasonic waves passing therethrough to interact with each other with a higher efficiency than that of the prior art. The present light deflecting medium displays various effects by the several combinations of the propagation directions of light and acoustic waves.
Inventors
- 👤 Naoya Uchida
- 👤 Yoshiro Ohmachi
- 👤 Nobukazu Niizeki
- 👤 Takahiro Inamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/33
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
63 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for propagating ultrasonic waves through said medium in an appropriate direction; means for transmitting light beams through said medium so as to cause the light beams to interact with the ultrasonic waves elasto-optically in said medium; and means for absorbing acoustic waves transmitted from the medium.
Claim 2
Dependent Claim
26 words
An arrangement as defined in claim 1 wherein the single crystal tellurium dioxide medium has a volume of at least 10 X 10 X 10 mm.
Claim 3
Dependent Claim
19 words
An arrangement as defined in claim 1 wherein the effective optical wavelength ranges from 0.35 to 5 Mu m.
Claim 4
Dependent Claim
22 words
An arrangement as defined in claim 1 wherein the ultrasonic waves propagated through the medium have wavelengths of from VHF to UHF.
Claim 5
Dependent Claim
71 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for propagating longitudinal ultrasonic waves through said medium substantially along a (001) direction; means for transmitting light beams through said medium substantially in a (001) plane to be polarized along the (001) direction by elasto-optical interaction with said ultrasonic waves in said medium; and means for absorbing the acoustic waves transmitted from said medium.
Claim 6
Dependent Claim
17 words
An arrangement as defined in claim 3 wherein the light beams are polarized along a (001) direction.
Claim 7
Dependent Claim
69 words
An arrangement for acousto-optical light deflection comprisinG a light deflecting medium of single crystal tellurium dioxide; means for propagating longitudinal ultrasonic waves through said medium substantially along a (101) direction; means for transmitting light beams through medium substantially along a (101) direction to be polarized along a (010) direction by elasto-optical interaction with the ultrasonic waves in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 8
Dependent Claim
61 words
An arrangement for acousto-optical light deflection comprising a medium of single crystal tellurium dioxide; means for propagating longitudinal ultrasonic waves through said medium substantially along the (100) direction; means for transmitting light beams through said medium substantially along a (011) direction by elasto-optical interaction with the ultrasonic waves in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 9
Dependent Claim
76 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for propagating ultrasonic shear waves through said medium substantially along the (110) direction to be displaced to the (110) direction; means for transmitting light beams through said medium substantially along the (001) direction to be polarized in arbitrary directions by elasto-optical interaction with said ultrasonic waves in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 10
Dependent Claim
35 words
An arrangement as defined in claim 10 wherein the means for absorbing acoustic waves transmitted from said medium comprises a chalcogenide glass selected from the group consisting of arsenic selenide glass and arsenic sulfide glass.
Claim 11
Dependent Claim
72 words
An arrangement for two-dimensional acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; two means for propagating ultrasonic shear waves through said medium along two equivalent (110) directions respectively intersecting each other at right angles; means for transmitting light beams through said medium substantially along the (001) direction by elasto-optical interaction with said ultrasonic waves in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 12
Dependent Claim
35 words
An arrangement as defined in claim 12 wherein the means for absorbing acoustic wave transmitted from said medium comprises a chalcogenide glass selected from the group consisting of arsenic selenide glass and arsenic sulfide glass.
Claim 13
Dependent Claim
77 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for propagating ultrasonic shear waves through said medium substantially along the (101) direction to be displaced to the (101) orientation; means for transmitting light beams through said medium substantially along the (010) direction to be polarized along the (100) orientation by elasto-optical interaction with ultrasonic shear waves in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 14
Dependent Claim
84 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for propagating ultrasonic shear waves through said medium along a direction determined by a zero temperature coefficient of the acoustic velocity to be displaced to the (001) plane; means for transmitting light beams through said medium along the (001) direction to be polarized in arbitrary directions by elasto-optical interaction with said ultrasonic shear waves in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 15
Dependent Claim
20 words
An arrangement as defined in claim 15 wherein the ultrasonic shear waves are propagated along the (1.38, 1, 0) direction.
Claim 16
Dependent Claim
20 words
An arrangement as defined in claim 15 wherein the ultrasonic shear waves aRe propagated along the (1, 1.38, 0) direction.
Claim 17
Dependent Claim
20 words
An arrangement as defined in claim 15 wherein the ultrasonic shear waves are propagated along the (1.38, 1, 0) direction.
Claim 18
Dependent Claim
19 words
An arrangement as defined in claim 15 wherein the ultrasonic shear are propagated along the (1, 1.38, 0) direction.
Claim 19
Dependent Claim
71 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for conducting ultrasonic shear waves through said medium in the (001) plane to be displaced to the (001) orientation; means for transmitting light beams through said medium so as to interact with said ultrasonic shear waves by the abnormal Bragg''s reflection in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 20
Dependent Claim
71 words
An arrangement for acousto-optical light deflection comprising a light deflecting medium of single crystal tellurium dioxide; means for conducting ultrasonic shear waves through said medium along the (001) orientation to be displaced to the (001) plane; means for transmitting light beams through said medium so as to interact with said ultrasonic shear waves by the abnormal Bragg''s reflection in said medium; and means for absorbing acoustic waves transmitted from said medium.
Claim 21
Dependent Claim
84 words
An arrangement for two-dimensional acousto-optical light deflection comprising two deflecting media of single crystal tellurium dioxide; means for propagating ultrasonic waves through each medium in an appropriate direction; means for transmitting light beams through said two media in series so as to cause the light beams to interact with the ultrasonic waves elasto-optically in said media respectively, wherein the light beams deflected in a certain direction by the first deflecting medium are again deflected by the second deflecting medium in a direction perpendicular thereto.
Claim 22
Dependent Claim
103 words
An arrangement fro two-dimensional acousto-optical light deflection comprising two deflecting media of single crystal tellurium dioxide; means for propagating ultrasonic waves through each medium in an appropriate direction; optical means for rotating a polarization plane placed between the two deflecting media; means for transmitting light beams through said two media and the optical means therebetween in series so as to cause the light beams to interact with the ultrasonic waves elasto-optically in said media respectively, wherein the light beams deflected in a certain direction by the first deflecting medium are again deflected by the second deflecting medium in an appropriately rotated polarization direction.
Claim 23
Dependent Claim
29 words
An arrangement as defined in claim 23 wherein the optical means for rotating a polarization plane to be placed between the two deflecting media is a Mu /2 plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |