Patent US3868592A successfully refreshed from Google Patents.
US3868592A
Expired / Lapsed
US
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Improved tuning apparatus for a dye laser
Assignee: COHERENT RADIATION
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Filing: 1973-05-30
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Granted: 1975-02-25
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Expires: 1993-05-30
Abstract
Abstract One or more birefringent plates are placed within the optical cavity of a dye laser. Each of the plates is positioned at an angle, such as Brewster''s angle with respect to the light reflected within the optical cavity of the dye laser. The output wavelength from the dye laser is tuned by rotating the birefringent plates while maintaining the plates at the same angle.
Inventors
- 👤 J Michael Yarborough
- 👤 James L Hobart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08018; H01S3/08022; H01S3/08031; H01S3/08036; H01S3/10; H01S3/106; H01S3/1062
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
53 words
A method of tuning a dye laser comprising: placing a birefringent plate within the optical cavity of the dye laser to intersect light reflected within the optical cavity; and rotating said plate to obtain the desired output wavelength, while maintaining said birefringent plate at the same angle with respect to the reflected light.
Claim 2
Independent Claim
53 words
A method of tuning a dye laser comprising: placing a birefringent plate within the optical cavity of the dye laser to intersect light reflected within the optical cavity; and rotating said plate to obtain the desired output wavelength, while maintaining said birefringent plate at the same angle with respect to the reflected light.
Claim 3
Dependent Claim
12 words
A method as in claim 1 wherein said angle is Brewster''s angle.
Claim 4
Dependent Claim
36 words
The method of claim 2 including the steps of placing additional spaced-apart ganged birefringent plates within the optical cavity of the dye laser, each at Brewster''s angle relative to the light reflected within the optical cavity.
Claim 5
Dependent Claim
105 words
In a dye laser having an optical cavity, apparatus for tuning said dye laser comprising: a birefringent plate having an ordinary and an extraordinary index of refraction; said birefringent plate being mounted within the optical cavity of the dye laser to intersect the light beam reflected within the optical cavity thereof; and means for rotating said birefringent plate to effectively change the extraordinary index of refraction of said birefringent plate while the ordinary index of refraction thereof remains the same to provide the desired output wavelength of said light beam, said plate being maIntained at the same angle with respect to the reflected light beam.
Claim 6
Dependent Claim
105 words
In a dye laser having an optical cavity, apparatus for tuning said dye laser comprising: a birefringent plate having an ordinary and an extraordinary index of refraction; said birefringent plate being mounted within the optical cavity of the dye laser to intersect the light beam reflected within the optical cavity thereof; and means for rotating said birefringent plate to effectively change the extraordinary index of refraction of said birefringent plate while the ordinary index of refraction thereof remains the same to provide the desired output wavelength of said light beam, said plate being maIntained at the same angle with respect to the reflected light beam.
Claim 7
Dependent Claim
11 words
Apparatus as in claim 4 wherein said angle is Brewster''s angle.
Claim 8
Dependent Claim
14 words
Apparatus as in claim 4 wherein said birefringent plate is made of quartz crystal.
Claim 9
Dependent Claim
117 words
In a dye laser having an optical cavity, apparatus for tuning said dye laser comprising: a plurality of spaced-apart parallel birefringent plates each having an ordinary and an extraordinary index of refraction; said plurality of birefringent plates being mounted within the optical cavity of the dye laser at Brewster''s angle with respect to the light beam reflected within the optical cavity thereof; and means for rotating said plurality of birefringent plates to effectively change the extraordinary index of refraction of each of said birefringent plates while the ordinary index thereof remains the same to provide the desired output wavelength of said light beam, said plurality of plates being maintained at Brewster''s angle to said reflected light beam.
Claim 10
Dependent Claim
117 words
In a dye laser having an optical cavity, apparatus for tuning said dye laser comprising: a plurality of spaced-apart parallel birefringent plates each having an ordinary and an extraordinary index of refraction; said plurality of birefringent plates being mounted within the optical cavity of the dye laser at Brewster''s angle with respect to the light beam reflected within the optical cavity thereof; and means for rotating said plurality of birefringent plates to effectively change the extraordinary index of refraction of each of said birefringent plates while the ordinary index thereof remains the same to provide the desired output wavelength of said light beam, said plurality of plates being maintained at Brewster''s angle to said reflected light beam.
Claim 11
Dependent Claim
35 words
Apparatus as in claim 7 wherein each of said plurality of plates has a different thickness and wherein the thickness of the thicker plates is an integer multiple of the thickness of the thinnest plate.
Claim 12
Dependent Claim
15 words
Apparatus as in claim 8 wherein said plurality of plates are made of quartz crystal.
References Cited (Backward Citations)
US3588224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |