US3628182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring-type parametric oscillator
Assignee: AT&T Inc
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Filing: 1969-03-20
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Granted: 1971-12-14
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Expires: 1989-03-20
Abstract
Abstract In the parametric oscillators disclosed, first and second ring resonators are disposed to pass pumping radiation in one direction only and are characterized by a common region in which the nonlinear optical medium is disposed. The first and second ring resonators are separately tunable to resonate the signal and idler, respectively.
Inventors
- 👤 Arthur Ashkin
- 👤 John E Bjorkholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:48
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/081; H01S3/083; G; G02; G02F; G02F1/00; G02F1/35; G02F1/39; H01S3/10; H01S3/106; H01S3/108; H01S3/1083
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
Apparatus for the generation of coherent radiation comprising in combination a nonlinear optical medium, means for applying pumping radiation to said medium for unidirectional propagation therethrough to generate therein signal and idler radiation, a ring resonator for resonating either said signal or idler radiation, but not both, a second resonator for resonating said signal or idler not resonated in said ring resonator, said second resonator having a common region with said ring resonator, said medium being disposed in said common region, and means for providing egress of radiation from at least one of said resonators.
Claim 2
Dependent Claim
95 words
Apparatus for the generation of coherent radiation comprising in combination a nonlinear optical medium, means for applying pumping radiation to said medium for unidirectional propagation therethrough to generate therein signal and idler radiation, a ring resonator for resonating either said signal or idler radiation, but not both, a second resonator for resonating said signal or idler not resonated in said ring resonator, said second resonator having a common region with said ring resonator, said medium being disposed in said common region, and means for providing egress of radiation from at least one of said resonators.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1 in which the ratio of the power of the pumping radiation to the threshold power of said nonlinear medium is about 4.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 1 in which said ring resonator and said second resonator are separately tunable.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 3 in which the second resonator is a ring resonator.
Claim 6
Dependent Claim
28 words
Apparatus according to claim 4 in which the first and second ring resonators are formed in part by retroreflecting elements, said elements being translatable for tuning said resonators.
Claim 7
Dependent Claim
13 words
Apparatus according to claim 5 in which the retroreflecting elements are rooftop reflectors.
Claim 8
Dependent Claim
64 words
Apparatus for the generation of coherent radiation comprising a source of pumping radiation, signal and idler resonators characterized by a common region and adapted for unidirectional propagation of the pumping radiation in said common region, a nonlinear optical medium being disposed in said common region, at least one of said resonators being a ring resonator arranged to prevent induced reflection of said pumping radiation.
Claim 9
Dependent Claim
64 words
Apparatus for the generation of coherent radiation comprising a source of pumping radiation, signal and idler resonators characterized by a common region and adapted for unidirectional propagation of the pumping radiation in said common region, a nonlinear optical medium being disposed in said common region, at least one of said resonators being a ring resonator arranged to prevent induced reflection of said pumping radiation.
Claim 10
Dependent Claim
15 words
Apparatus according to claim 7 in which said signal and idler resonators are separately tunable.
Claim 11
Dependent Claim
48 words
Apparatus according to claim 7 in which both of the signal and idler resonators are ring resonators, the common region of said resonators being defined by obliquely oriented reflectors that are substantially totally transmissive for the pumping radiation and substantially totally reflective for the signal and idler radiations.
Claim 12
Dependent Claim
46 words
Apparatus according to claim 7 in which the signal and idler resonators include a pair of planar reflectors obliquely oriented with respect to the propagation directions of the signal and idler radiation, said obliquely oriented reflectors being substantially totally transmissive with respect to the pumping radiation.
Claim 13
Dependent Claim
27 words
Apparatus according to claim 7 in which the ratio of the power of the pumping radiation to the threshold power of said nonlinear medium is about 4.
References Cited (Backward Citations)
US3174044A
Cited
US3267385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |