US3973219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Very rapidly tuned cw dye laser
Assignee: Research Corp
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Filing: 1975-04-24
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Granted: 1976-08-03
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Expires: 1995-04-24
Abstract
Abstract A method and apparatus is described which allows a cw dye laser to be tuned over hundreds of angstroms on a nanosecond time scale in spite of the relatively long cavity decay and build up time. A tuning element is positioned at the mid-point between the reflective mirrors that define the length of the cavity.
Inventors
- 👤 Chung L. Tang
- 👤 John Martin Telle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/106; H01S3/107
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 words
A continuous-wave dye laser having a tuner positioned at the mid-point of the laser cavity wherein the frequency of tuning of said tuner in cycles per second is made equal to the velocity of light c in centimeters per second divided by the optical length L of said cavity in centimeters.
Claim 2
Dependent Claim
51 words
A continuous-wave dye laser having a tuner positioned at the mid-point of the laser cavity wherein the frequency of tuning of said tuner in cycles per second is made equal to the velocity of light c in centimeters per second divided by the optical length L of said cavity in centimeters.
Claim 3
Independent Claim
32 words
A method for tuning a continuous-wave dye laser which includes continuously spatially changing the wavelength of the light wave propogating inside the cavity and thus achieving a substantial increase in tuning rate.
Claim 4
Independent Claim
32 words
A method for tuning a continuous-wave dye laser which includes continuously spatially changing the wavelength of the light wave propogating inside the cavity and thus achieving a substantial increase in tuning rate.
Claim 5
Dependent Claim
75 words
In a continuous-wave dye laser having a cavity optical path length L in centimeters, and a tuner having a tuning rate f in cycles per second, the improvement which comprises: means to position said tuner at the mid-point of said light path; and means to cause said tuning rate f in cycles per second to equal the velocity of light in centimeters per second divided by the optical path length of said cavity in centimeters.
Claim 6
Dependent Claim
75 words
In a continuous-wave dye laser having a cavity optical path length L in centimeters, and a tuner having a tuning rate f in cycles per second, the improvement which comprises: means to position said tuner at the mid-point of said light path; and means to cause said tuning rate f in cycles per second to equal the velocity of light in centimeters per second divided by the optical path length of said cavity in centimeters.
Claim 7
Independent Claim
61 words
A method for tuning a continuous-wave dye laser which comprises: placing a tuning element at the mid-point of the laser cavity light path; and causing the tuning rate f in cycles per second and the laser cavity optical path length L in centimeters to satisfy the equation L = c/f where c is the velocity of light in centimeters per second.
Claim 8
Independent Claim
61 words
A method for tuning a continuous-wave dye laser which comprises: placing a tuning element at the mid-point of the laser cavity light path; and causing the tuning rate f in cycles per second and the laser cavity optical path length L in centimeters to satisfy the equation L = c/f where c is the velocity of light in centimeters per second.
References Cited (Backward Citations)
US3648193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |