US3435373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable raman laser
Assignee: AT&T Inc
•
Filing: 1966-01-21
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Granted: 1969-03-25
•
Expires: 1986-01-21
Abstract
No abstract record available.
Inventors
- 👤 Peter A Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:13
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/30; H01S3/10; H01S3/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A LASER COMPRISING A CRYSTAL OF SEMICONDUCTIVE MATERIAL IN WHICH AN ELECTRON HAS AN EFFECTIVE MASS LESS THAN THE MASS OF A FREE ELECTRON, MEANS FORMING AN OPTICAL RESONATOR DISPOSED ABOUT SAID CRYSTAL, MEANS FOR APPLYING A MAGNETIC FIELD TO SAID CRYSTAL, AND MEANS FOR APPLYING TO SAID CRYSTAL COHERENT PUMPING RADIATION IN A DIRECTION SUBSTANTIALLY COLLINEAR WITH THE AXIS OF SAID RESONATOR, SAID COHERENT RADIATION HAVING A PHOTON ENERGY LESS THAN THE BANDGAP ENERGY OF SAID CRYSTAL AND HAVING A POWER
Claim 2
Dependent Claim
82 words
A LASER COMPRISING A CRYSTAL OF SEMICONDUCTIVE MATERIAL IN WHICH AN ELECTRON HAS AN EFFECTIVE MASS LESS THAN THE MASS OF A FREE ELECTRON, MEANS FORMING AN OPTICAL RESONATOR DISPOSED ABOUT SAID CRYSTAL, MEANS FOR APPLYING A MAGNETIC FIELD TO SAID CRYSTAL, AND MEANS FOR APPLYING TO SAID CRYSTAL COHERENT PUMPING RADIATION IN A DIRECTION SUBSTANTIALLY COLLINEAR WITH THE AXIS OF SAID RESONATOR, SAID COHERENT RADIATION HAVING A PHOTON ENERGY LESS THAN THE BANDGAP ENERGY OF SAID CRYSTAL AND HAVING A POWER
References Cited (Backward Citations)
US3265977A
Cited
US3300653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |