Patent US3581230A successfully refreshed from Google Patents.
US3581230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive q-switch and modulator for co{hd 2 {l lasers
Assignee: RTX Corp
•
Filing: 1969-01-27
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Granted: 1971-05-25
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Expires: 1989-01-27
Abstract
Abstract A cell containing a gaseous bleachable dye is positioned in the optical feedback cavity of a carbon dioxide laser to Q-switch the laser. An acoustic wave generated through the gas will cause the output of the laser to be modulated at the acoustic frequency.
Inventors
- 👤 David C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:04
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/11; H; H01; H01S; H01S3/00; H01S3/10; H01S3/106; H01S3/1068; H01S3/11; H01S3/1123; H01S3/113
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
Apparatus as in claim 1 in which said gas is propylene.
Claim 2
Dependent Claim
11 words
Apparatus as in claim 1 in which said gas is propane.
Claim 3
Dependent Claim
12 words
Apparatus as in claim 1 in which said gas if Freon 11.
Claim 4
Dependent Claim
42 words
Apparatus as in claim 1 and including means to generate an acoustic wave within said optical cell to vary the refractive index of said gaseous bleachable dye and modulate the output from said laser medium at the frequency of said acoustic wave.
References Cited (Backward Citations)
US3281713A
Cited
US3321714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |