Patent US3725809A successfully refreshed from Google Patents.
US3725809A
Expired / Lapsed
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Dielectric ring lasers using waveguiding
Assignee: AT&T Inc
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Filing: 1971-04-05
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Granted: 1973-04-03
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Expires: 1991-04-05
Abstract
Abstract There is disclosed a ring laser in which mode-controllable oscillations occur in a dye-doped dielectric film along an axis wrapped around a lower-index dielectric. Output coupling is typically achieved by fringing field coupling to a nearby dielectric body of higher index.
Inventors
- 👤 R Ulrich
- 👤 H Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:56
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/293; G02B6/29346; G02B6/29349; G02B6/10; G02B6/12; G02B6/122; G02B6/124; G02B6/1245; G02B6/27; G02B6/2706; H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/063; H01S3/14; H01S3/16; H01S3/168; H01S5/00; H01S5/10; H01S5/1071; H01S3/0602; H01S3/0608; H01S3/08; H01S3/08059; H01S3/10; H01S3/106; H01S3/108; H01S3/109
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
53 words
A ring laser according to claim 1 in which the second body comprises a dielectric rod the axis of which is the central axis and the first body extends about and in continuous contact with the lateral surface of said rod to form the closed feedback path about the axis of said rod.
Claim 2
Dependent Claim
47 words
A ring laser according to claim 1 in which the first body includes in the closed feedback path at least one region in which the transverse dimension of the order of the oscillation wavelength is varied along said path to select a value of said oscillation wavelength.
Claim 3
Dependent Claim
123 words
A ring laser comprising a rod having a smooth, continuously-curved lateral surface and comprising a transparent dielectric material, and deposited on said rod about the axis thereof a mixture of a dielectric medium and an active medium forming a closed, continuously-curved ring-like feedback path for optical oscillations about the axis of said rod, said mixture having a smooth, continuously-curved major surface continuously in contact with said lateral surface along said path and having a thickness orthogonal to said major surface of the order of magnitude of an optical emission wavelength of said active medium to waveguide said oscillations with respect to the curvature of said continuously-curved feedback path, and means for coupling optical energy out of said mixture through a major surface thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |