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US4924472A
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Laser output power stabilizing apparatus of a continuous-wave gas laser device
Assignee: KOREA STANDARDS RESEARCH INSTITUTE 1 DORYONG-DONG SEO-KU TAEJON-SHI CHUNGNAM
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Filing: 1988-09-08
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Granted: 1990-05-08
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Expires: 2008-09-08
Abstract
Abstract A continuous-wave stabilizing apparatus wherein laser output power is stabilized by a feedback control of a voltage applied to an auxiliary electrode installed between an anode and a cathode depending on fluctuation of laser output power.
Inventors
- 👤 In W. Lee
- 👤 Dong J. Shin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:24
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/131; H01S3/134
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
A continuous-wave laser output power stabilizing apparatus, comprising: a power supply means for supplying power to said apparatus; a laser head means for generating a laser beam having a discharge tube, an auxiliary electrode and at least two reflectors, and further having an anode portion and cathode portion connected to said power supply means; a detector means for detecting laser output power fluctuations and for providing an output signal therefrom; a feedback control means for receiving said feedback signal from said detector means and for controlling voltage applied to said auxiliary electrode of said laser head means to thereby stabilize said laser output power fluctuations.
Claim 2
Dependent Claim
105 words
A continuous-wave laser output power stabilizing apparatus, comprising: a power supply means for supplying power to said apparatus; a laser head means for generating a laser beam having a discharge tube, an auxiliary electrode and at least two reflectors, and further having an anode portion and cathode portion connected to said power supply means; a detector means for detecting laser output power fluctuations and for providing an output signal therefrom; a feedback control means for receiving said feedback signal from said detector means and for controlling voltage applied to said auxiliary electrode of said laser head means to thereby stabilize said laser output power fluctuations.
Claim 3
Dependent Claim
36 words
A continuous-wave laser output power stabilizing apparatus as in claim 1, further comprising a laser beam splitter means for splitting said laser beam, wherein a portion of said split beam is detected by said detecting means.
Claim 4
Dependent Claim
39 words
A continuous-wave laser output power stabilizing apparatus as in claim 1, wherein said portion of the laser beam is transmitted through at least one of said two reflectors of said laser head means and detected by said detector means.
Claim 5
Dependent Claim
45 words
A continuous-wave laser output power stabilizing apparatus as in claim 1, further comprising a means for measuring impedance variation in said laser discharge tube of said laser head means, wherein said measured impedance variation in said laser discharge tube is detected by said detector means.
References Cited (Backward Citations)
US4509176A
Cited
US4590599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |