US4756598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Second harmonic generation with 5-chloro-2-nitroaniline
Assignee: 3M Co
•
Filing: 1987-08-13
•
Granted: 1988-07-12
•
Expires: 2007-08-13
Abstract
Abstract Devices for and method of generating coherent second harmonic light radiation. The devices comprise a laser source of coherent light radiation at a fixed fundamental frequency, crystalline 5-chloro-2-nitroaniline that crystallizes in a non-centrosymmetric configuration, means for directing the output radiation of the laser onto the 5-chloro-2-nitroanilane, and output means for utilizing the second harmonic frequency.
Inventors
- 👤 Diana J. Gerbi
- 👤 Peter C. Leung
- 👤 John J. Stofko, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:41
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A second harmonic generator comprising a laser source of coherent light radiation at a fixed fundamental frequency, an organic molecular crystalline compound, means for directing the output radiation of the laser onto the compound, and output means for utilizing the second harmonic frequency, said compound being 5-chloro-2-nitroaniline which crystallizes in a non-centrosymmetric configuration, said compound being transparent to radiation at said fixed fundamental frequency and said second harmonic frequency.
Claim 2
Dependent Claim
69 words
A second harmonic generator comprising a laser source of coherent light radiation at a fixed fundamental frequency, an organic molecular crystalline compound, means for directing the output radiation of the laser onto the compound, and output means for utilizing the second harmonic frequency, said compound being 5-chloro-2-nitroaniline which crystallizes in a non-centrosymmetric configuration, said compound being transparent to radiation at said fixed fundamental frequency and said second harmonic frequency.
Claim 3
Dependent Claim
21 words
The second harmonic generator of claim 1 wherein said organic molecular crystalline compound has the noncentrosymmetric space group Pna2 1 .
Claim 4
Dependent Claim
14 words
The second harmonic generator of claim 1 wherein the laser is a Nd-YAG laser.
Claim 5
Dependent Claim
13 words
The second harmonic generator of claim 1 wherein said compound is a solid.
Claim 6
Dependent Claim
59 words
A process for converting a fixed fundamental frequency of coherent laser light into a second harmonic frequency which comprises passing said laser light through a nonlinear optical element comprising an organic molecular crystalline compound, said compound being 5-chloro-2-nitroaniline which crystallizes in a non-centrosymmetric configuration, said compound being transparent to said fixed fundamental frequency and to said second harmonic frequency.
Claim 7
Dependent Claim
59 words
A process for converting a fixed fundamental frequency of coherent laser light into a second harmonic frequency which comprises passing said laser light through a nonlinear optical element comprising an organic molecular crystalline compound, said compound being 5-chloro-2-nitroaniline which crystallizes in a non-centrosymmetric configuration, said compound being transparent to said fixed fundamental frequency and to said second harmonic frequency.
References Cited (Backward Citations)
US3431484A
Cited
US3395329A
Cited
US3858124A
Cited
US4208501A
Cited
US4199698A
Cited
US4431263A
Cited
US4376899A
Cited
US4622409A
Cited
US4607095A
Cited
US4605869A
Cited
US4579915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |