US4826283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
LiB3 O5 crystal and its nonlinear optical devices
Assignee: Fujian Institute of Research on the Structure of Matter
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Filing: 1988-06-13
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Granted: 1989-05-02
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Expires: 2008-06-13
Abstract
Abstract This invention relates to NLO devices made of LiB 3 O 5 crystals, which can be used in a laser system of high power density and relatively large divergence and possess a character of high SHG conversion efficiency. Moreover the NLO devices (including waveguide devices) of this invention are capable of producing coherent harmonics of wavelength below 2000Å and tolerating larger processing error of crystals.
Inventors
- 👤 Chen Chuangtian
- 👤 Wu Yicheng
- 👤 Jiang Aidong
- 👤 Wu Bochang
- 👤 You Guming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:44
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/3551; C; C30; C30B; C30B11/00; C30B17/00; C30B29/00; C30B29/10; G02F1/37; G02F1/377
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
A NLO device comprising means to direct at least one incident beam of electromagnetic radiation into at least one crystal having NLO properties whereby electromagnetic radiation emerging from said crystal contains at least one frequency different from the frequency of any incident beam of radiation, wherein said crystal is a single crystal of LiB 3 O 5 .
Claim 2
Dependent Claim
58 words
A NLO device comprising means to direct at least one incident beam of electromagnetic radiation into at least one crystal having NLO properties whereby electromagnetic radiation emerging from said crystal contains at least one frequency different from the frequency of any incident beam of radiation, wherein said crystal is a single crystal of LiB 3 O 5 .
Claim 3
Dependent Claim
22 words
A NLO device of claim 1 wherein the wavelength of the incident beam of radiation falls in the range 0.375 μm-2.6 μm.
Claim 4
Dependent Claim
20 words
A NLO device of claim 1 wherein at least 70×70 mm 2 in cross sections is obtained by splicing techniques.
Claim 5
Dependent Claim
70 words
A waveguide device comprising means to direct at least one incident beam of electromagnetic radiation into the waveguide region of at least one NLO crystal whereby radiation emerging from said waveguide region contains at least one frequency different from the frequency of any incident beam of radiation, wherein a waveguide region on the surface of said crystal and said crystal is a single crystal of LiB 3 O 5 .
Claim 6
Dependent Claim
70 words
A waveguide device comprising means to direct at least one incident beam of electromagnetic radiation into the waveguide region of at least one NLO crystal whereby radiation emerging from said waveguide region contains at least one frequency different from the frequency of any incident beam of radiation, wherein a waveguide region on the surface of said crystal and said crystal is a single crystal of LiB 3 O 5 .
Claim 7
Dependent Claim
35 words
A waveguide device of claim 4 wherein said waveguide region consists of Li 1-x M x B 3 O 5 (M is Na, K, et. al. 0<x<1) obtained by ion substitution or ion injection techniques.
Claim 8
Independent Claim
24 words
A device of any one of claims 1-5 wherein said crystal of LiB 3 O 5 is grown by high-temperature solution top seeding method.
References Cited (Backward Citations)
US3262058A
Cited
US3328723A
Cited
US3772528A
Cited
US3679907A
Cited
US3665205A
Cited
US3842289A
Cited
US3949323A
Cited
US4236785A
Cited
US4200808A
Cited
US4427260A
Cited
US4349907A
Cited
US4515429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |