US3965375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium perchlorate trihydrate nonlinear devices
Assignee: AT&T Inc
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Filing: 1975-03-21
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Granted: 1976-06-22
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Expires: 1995-03-21
Abstract
Abstract The nonlinear properties of LiClO4.3H2O permit noncritical phase matching in the vicinity of 5200 Angstroms at room temperature. This material may be used as the essential element in second harmonic generators and other nonlinear devices which could then be operated at room temperature under noncritical phase-matched conditions.
Inventors
- 👤 John George Bergman, Jr.
- 👤 Glen Robert Crane
- 👤 Raymond Nichols Storey
- 👤 Denise Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:56
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/3551
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
A device comprising a crystalline body consisting essentially of LiClO 4 .3H 2 O, with means for introducing into said crystalline body a beam of coherent plane polarized electromagnetic radiation of a first wavelength of approximately 5300 Angstroms, and means for utilizing a beam of coherent electromagnetic radiation of a second wavelength of approximately 2650 Angstroms emitted from said body, the said body being positioned in such a way that the angle between the beam of first wavelength and the optic axis of said crystalline body is such that the first beam and second beam are essentially noncritically phase matched within the crystal at approximately room temperature.
Claim 2
Independent Claim
107 words
A device comprising a crystalline body consisting essentially of LiClO 4 .3H 2 O, with means for introducing into said crystalline body a beam of coherent plane polarized electromagnetic radiation of a first wavelength of approximately 5300 Angstroms, and means for utilizing a beam of coherent electromagnetic radiation of a second wavelength of approximately 2650 Angstroms emitted from said body, the said body being positioned in such a way that the angle between the beam of first wavelength and the optic axis of said crystalline body is such that the first beam and second beam are essentially noncritically phase matched within the crystal at approximately room temperature.
Claim 3
Dependent Claim
24 words
The device of claim 1 together with a resonant means of supporting a standing wave of one of said frequencies in said crystalline body.
References Cited (Backward Citations)
US3234475A
Cited
US3262058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |