US3740664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid frequency stable laser system
Assignee: RTX Corp
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Filing: 1972-02-22
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Granted: 1973-06-19
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Expires: 1992-02-22
Abstract
Abstract The output beam from a low power, stable frequency laser is injected into a higher power laser having a high gain medium therein to provide an output beam from the over all system which has the characteristics of both high power and stable frequency. The higher power laser is capable of self oscillation when no external stimulating signal is provided. A stable frequency drive signal, having a competitive line, is injected into the high gain medium causing the higher power laser to operate on a line different from the self oscillating line. A wavelength discriminator which samples the system output is used to tune the higher power laser to the wavelength of the stable frequency laser. An analysis of the locking phenomenon is also provided.
Inventors
- 👤 R Freiberg
- 👤 C Buczek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:03
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/139; H01S3/1394
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A stable frequency laser system comprising: means for providing a drive beam of electromagnetic energy having a stable frequency and a characteristic first wavelength; laser power oscillator means containing a homogeneously broadened gain medium for providing an output beam of electromagnetic energy having a characteristic second wavelength including means for coupling the drive beam into the power oscillator means; and means responsive to the wavelength of the output beam for tuning the optical path length of the power oscillator to quench all resonance at the second wavelength and amplify the intensity of the output beam at the first wavelength thereby providing a stable frequency output beam of amplified laser energy at the characteristic first wavelength of the drive beam.
Claim 2
Dependent Claim
119 words
A stable frequency laser system comprising: means for providing a drive beam of electromagnetic energy having a stable frequency and a characteristic first wavelength; laser power oscillator means containing a homogeneously broadened gain medium for providing an output beam of electromagnetic energy having a characteristic second wavelength including means for coupling the drive beam into the power oscillator means; and means responsive to the wavelength of the output beam for tuning the optical path length of the power oscillator to quench all resonance at the second wavelength and amplify the intensity of the output beam at the first wavelength thereby providing a stable frequency output beam of amplified laser energy at the characteristic first wavelength of the drive beam.
Claim 3
Dependent Claim
21 words
A laser system according to claim 1 wherein the means for providing a drive beam is a stable frequency laser oscillator.
Claim 4
Dependent Claim
16 words
A laser system according to claim 2 wherein the power oscillator is in a ring configuration.
Claim 5
Dependent Claim
129 words
A laser system according to claim 3 wherein the means for tuning the path length of the power oscillator comprises: a beam splitter which interacts with the output beam and produces a feedback beam; a wavelength discriminator which transmits that portion of the feedback beam that is at the first wavelength; detector means which respond to the beam transmitted by the discriminator by producing an electrical signal; stabilization servo electronics means which are responsive to the detector signal and which provides an appropriate error signal; and a piezoelectric transducer which is fixedly attached to one of the reflector elements forming the ring configuration, the transducer being responsive to the error signal whereby the optical path length of the regenerative oscillator is adjusted to be resonant at the first wavelength.
References Cited (Backward Citations)
US3395367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |