US4199698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Methyl-4-nitro-aniline nonlinear optical devices
Assignee: AT&T Inc
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Filing: 1978-12-08
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Granted: 1980-04-22
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Expires: 1998-12-08
Abstract
Abstract Nonlinear devices using 2-methyl-4-nitroaniline are described. Devices using 2-methyl-4-nitroaniline as the active element include second harmonic generators, optical mixers and parametric oscillators which can be operated under phasematched conditions.
Inventors
- 👤 Clyde G. Bethea
- 👤 Barry F. Levine
- 👤 Robert T. Lynch
- 👤 Carl D. Thurmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:13
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
A device comprising a crystalline body, means for introducing coherent radiation into said crystalline body, said radiation including a first wavelength, and means for utilizing coherent radiation emitted from said crystalline body, said radiation including a second wavelength, CHARACTERIZED IN THAT said crystalline body consists essentially of 2-methyl-4-nitroaniline.
Claim 2
Independent Claim
48 words
A device comprising a crystalline body, means for introducing coherent radiation into said crystalline body, said radiation including a first wavelength, and means for utilizing coherent radiation emitted from said crystalline body, said radiation including a second wavelength, CHARACTERIZED IN THAT said crystalline body consists essentially of 2-methyl-4-nitroaniline.
Claim 3
Dependent Claim
16 words
A device as recited in claim 1 in which said means for introducing comprises a laser.
Claim 4
Dependent Claim
15 words
A device as recited in claim 2 in which said laser is a Nd:YAG laser.
Claim 5
Dependent Claim
15 words
A device as recited in claim 2 in which said laser is an AlGaAs laser.
Claim 6
Dependent Claim
20 words
A device as recited in claim 1 in which said means for introducing and said means for utilizing are prisms.
Claim 7
Dependent Claim
21 words
A device as recited in claim 1, 3 or 5 in which said second wavelength is half of said first wavelength.
Claim 8
Dependent Claim
18 words
A device as recited in claim 1 or 5 in which said first wavelength is approximately 1.0 μm.
Claim 9
Dependent Claim
18 words
A device as recited in claim 1 or 5 in which said first wavelength is approximately 0.8 μm.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |