Patent US4879722A successfully refreshed from Google Patents.
US4879722A
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Generation of coherent optical radiation by optical mixing
Assignee: Scientific Atlanta LLC
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Filing: 1987-11-25
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Granted: 1989-11-07
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Expires: 2007-11-25
Abstract
Abstract An efficient, compact source of coherent radiation in the infrared, visible and ultraviolet portion of the spectrum which is capable of modulation rates over the range from O Hz to in excess of 1 GHz. The radiation is produced by optical mixing within an external optical cavity wherein at least one of the interacting beams of light is provided by a solid state device selected from the group consisting of laser diodes, laser diode arrays and diode-pumped solid state lasers.
Inventors
- 👤 George J. Dixon
- 👤 Douglas W. Anthon
- 👤 John H. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:43
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; H01S3/00; H01S3/10; H01S3/106; H01S3/108; G; G02; G02F; G02F1/00; G02F1/35; G02F1/353; G02F1/3534; H01S3/1083; G02F1/354
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
110 words
A method for generating coherent optical radiation which comprises: (a) generating coherent optical radiation of a first frequency, w 1 , from a first source; (b) generating coherent optical radiation of a second frequency, w 2 , from a second source, wherein said second source comprises a laser diode; (c) introducing said radiation of frequency w 1 and said radiation of frequency w 2 into an optical cavity; and (d) converting said radiation of frequency w 1 and said radiation of frequency w 2 into coherent optical radiation of a third frequency, w 3 , by optical mixing within a nonlinear optical material which is contained within said optical cavity.
Claim 2
Independent Claim
110 words
A method for generating coherent optical radiation which comprises: (a) generating coherent optical radiation of a first frequency, w 1 , from a first source; (b) generating coherent optical radiation of a second frequency, w 2 , from a second source, wherein said second source comprises a laser diode; (c) introducing said radiation of frequency w 1 and said radiation of frequency w 2 into an optical cavity; and (d) converting said radiation of frequency w 1 and said radiation of frequency w 2 into coherent optical radiation of a third frequency, w 3 , by optical mixing within a nonlinear optical material which is contained within said optical cavity.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said second source comprises a laser diode array.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said optical cavity is separate from any utilized as a component of said first and second sources.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein said optical cavity is resonant for radiation of frequency w 1 .
Claim 6
Dependent Claim
18 words
The method of claim 3 wherein said optical cavity is resonant for radiation of frequency w 2 .
Claim 7
Dependent Claim
13 words
The method of claim 3 wherein w 3 =w 1 +w 2 .
Claim 8
Dependent Claim
18 words
The method of claim 3 wherein w 3 is the difference between w 1 and w 2 .
Claim 9
Dependent Claim
13 words
The method of claim 3 wherein said first source comprises a laser diode.
Claim 10
Dependent Claim
14 words
The method of claim 8 wherein said first source comprises a laser diode array.
Claim 11
Dependent Claim
15 words
The method of claim 3 wherein said first source comprises a diode-pumped solid state laser.
Claim 12
Dependent Claim
20 words
The method of claim 10 wherein the diode pump of said diode-pumped solid state laser comprises a laser diode array.
Claim 13
Dependent Claim
16 words
The method of claim 3 wherein said first source comprises a diode-pumped frequency-doubled solid state laser.
Claim 14
Dependent Claim
23 words
The method of claim 3 which additionally comprises modulating said radiation of a third frequency by modulating said radiation of a second frequency.
Claim 15
Dependent Claim
41 words
The method of claim 3 which additionally comprises adjusting and controlling the polarization of said radiation of a first frequency and the polarization of said radiation of a second frequency to optimize the generation of said radiation of a third frequency.
Claim 16
Dependent Claim
14 words
The method of claim 3 wherein said nonlinear optical material comprises potassium titanyl phosphate.
Claim 17
Independent Claim
105 words
An apparatus for generating coherent optical radiation which comprises: (a) means for generating coherent optical radiation of a first frequency, w 1 ; (b) means for generating coherent optical radiation of a second frequency, w 2 , which comprises a laser diode; (c) an optical cavity; (d) means for introducing said radiation of a first frequency and said radiation of a second frequency into said optical cavity; and (e) nonlinear optical means within said optical cavity for converting said radiation of a first frequency and said radiation of a second frequency into coherent optical radiation of a third frequency, w 3 , by optical mixing.
Claim 18
Independent Claim
105 words
An apparatus for generating coherent optical radiation which comprises: (a) means for generating coherent optical radiation of a first frequency, w 1 ; (b) means for generating coherent optical radiation of a second frequency, w 2 , which comprises a laser diode; (c) an optical cavity; (d) means for introducing said radiation of a first frequency and said radiation of a second frequency into said optical cavity; and (e) nonlinear optical means within said optical cavity for converting said radiation of a first frequency and said radiation of a second frequency into coherent optical radiation of a third frequency, w 3 , by optical mixing.
Claim 19
Dependent Claim
21 words
The apparatus of claim 16 wherein said means for generating said radiation of a second frequency comprises a laser diode array.
Claim 20
Dependent Claim
28 words
The apparatus of claim 16 wherein said optical cavity is separate from any utilized as a component of said first and second means for generating coherent optical radiation.
Claim 21
Dependent Claim
18 words
The apparatus of claim 18 wherein said optical cavity is resonant for radiation of frequency w 1 .
Claim 22
Dependent Claim
18 words
The apparatus of claim 18 wherein said optical cavity is resonant for radiation of frequency w 2 .
Claim 23
Dependent Claim
13 words
The apparatus of claim 18 wherein w 3 =w 1 +w 2 .
Claim 24
Dependent Claim
18 words
The apparatus of claim 18 wherein w 3 is the difference between w 1 and w 2 .
Claim 25
Dependent Claim
20 words
The apparatus of claim 18 wherein said means for generating said radiation of a first frequency comprises a laser diode.
Claim 26
Dependent Claim
21 words
The apparatus of claim 18 wherein said means for generating said radiation of a first frequency comprises a laser diode array.
Claim 27
Dependent Claim
22 words
The apparatus of claim 18 wherein said means for generating said radiation of a first frequency comprises a diode-pumped solid state laser.
Claim 28
Dependent Claim
20 words
The apparatus of claim 25 wherein the diode pump of said diode-pumped solid state laser comprises a laser diode array.
Claim 29
Dependent Claim
23 words
The apparatus of claim 18 wherein said means for generating said radiation of a first frequency comprises a diode-pumped frequency-doubled solid state laser.
Claim 30
Dependent Claim
20 words
The apparatus of claim 18 which additionally comprises means for effecting the modulation of said radiation of a second frequency.
Claim 31
Dependent Claim
32 words
The apparatus of claim 18 which additionally comprises means for adjusting and controlling the polarization of said radiation of a first frequency and the polarization of said radiation of a second frequency.
Claim 32
Dependent Claim
16 words
The apparatus of claim 18 wherein said nonlinear optical means is comprised of potassium titanyl phosphate.
References Cited (Backward Citations)
US3530301A
Cited
US4791631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |