US5123025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature optical source
Assignee: Thales SA
•
Filing: 1990-11-30
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Granted: 1992-06-16
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Expires: 2010-11-30
Abstract
Abstract A miniature optical source which includes at least one thin film of active laser materials having, in addition, non-linear properties. A pump laser for emitting a beam of a wavelength allowing for the pumping of the thin film of active laser material perpendicularly to the plane of the thin film. Also, an optical cavity constituted by two mirrors whose coefficients of reflection are maximum at the laser wavelength of the active laser material is further provided. The miniature optical source may find particular application in a physically compact laser emitting in the visible spectrum.
Inventors
- 👤 Michel Papuchon
- 👤 Jean-Pierre Huignard
- 👤 Eric Lallier
- 👤 Jean-Paul Pocholle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:41
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/09; H01S3/091; H01S3/094; H01S3/0941; H01S3/09415; H01S3/10; H01S3/106; H01S3/108; H01S3/109; H01S3/05; H01S3/06; H01S3/0602; H01S3/0604; H01S3/0627; H01S3/1095; H01S3/163; H01S3/1666
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
A miniature optical source, comprising: at least one thin layer of active laser material having non-linear properties; a pump laser emitting a laser beam, to impinge on said active laser material, of a wavelength allowing the thin layer of active laser material to be pumped perpendicular to a plane of the thin layer; and an optical cavity comprising two mirrors whose coefficients of reflection are a maximum at the laser wavelength of the active material; wherein the thin layer of active, non-linear laser material is Nd:YAl 3 (BO 3 ) 4 .
Claim 2
Dependent Claim
92 words
A miniature optical source, comprising: at least one thin layer of active laser material having non-linear properties; a pump laser emitting a laser beam, to impinge on said active laser material, of a wavelength allowing the thin layer of active laser material to be pumped perpendicular to a plane of the thin layer; and an optical cavity comprising two mirrors whose coefficients of reflection are a maximum at the laser wavelength of the active material; wherein the thin layer of active, non-linear laser material is Nd:YAl 3 (BO 3 ) 4 .
Claim 3
Dependent Claim
33 words
The miniature optical source according to claim 1, wherein one of the mirrors possesses a coefficient of reflection which is a minimum at a wavelength of a second harmonic of the laser wavelength.
Claim 4
Dependent Claim
41 words
The miniature optical source according to claim 1, wherein the mirrors of the optical cavity are constituted by opposite flat faces of the thin layer of active laser material which have been treated to make them reflective at the laser wavelength.
Claim 5
Dependent Claim
25 words
The miniature optical source according to claim 1, wherein the thin layer of active, non-linear laser material has a thickness of less than 1 mm.
Claim 6
Dependent Claim
33 words
The miniature optical source according to claim 1, wherein the thin layer includes at least one thin layer of active laser material and one thin layer of a material having non-linear optical properties.
Claim 7
Dependent Claim
47 words
The miniature optical source according to claim 5, wherein the thin layer of active laser material and the thin layer of non-linear material have their faces in contact treated to be anti-reflective at the laser wavelength and a wavelength of a second harmonic of the laser wavelength.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |