US4191931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled laser q-switch
Assignee: Lockheed Martin Corp
•
Filing: 1978-02-06
•
Granted: 1980-03-04
•
Expires: 1998-02-06
Abstract
Abstract In one embodiment, cooling of a laser passive Q-switch is provided by affixing the Q-switch to the rear mirror of the laser which, thus, acts as a heat sink for the Q-switch.
Inventors
- 👤 John D. Kuppenheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:45
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/042; H01S3/10; H01S3/11; H01S3/1123; H01S3/113; H01S3/0405
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a substrate mechanically coupled to one of said resonators and a passive Q-switch mechanically coupled to said substrate to provide good thermal contact between the Q-switch and substrate such that said substrate acts as a heat sink for such Q-switch.
Claim 2
Dependent Claim
59 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a substrate mechanically coupled to one of said resonators and a passive Q-switch mechanically coupled to said substrate to provide good thermal contact between the Q-switch and substrate such that said substrate acts as a heat sink for such Q-switch.
Claim 3
Dependent Claim
21 words
The improvement as recited in claim 1, wherein said substrate is selected for the group consisting of: copper; quartz; and sapphire.
Claim 4
Dependent Claim
31 words
The improvement as recited in claim 1, wherein said pair of resonators includes a totally reflecting resonator and a partially reflecting resonator, said substrate being coupled to the totally reflecting resonator.
Claim 5
Dependent Claim
16 words
The improvement as recited in claim 1, wherein said substrate is a good thermal conducting material.
Claim 6
Dependent Claim
77 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a substrate mechanically coupled to one of said resonators and a Q-switch mechanically coupled to said substrate to provide good thermal contact between the Q-switch and substrate such that said substrate acts as a heat sink for said Q-switch, said Q-switch comprising a solution of a dye, a plastic, and a solvent which is deposited on said substrate.
Claim 7
Dependent Claim
77 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a substrate mechanically coupled to one of said resonators and a Q-switch mechanically coupled to said substrate to provide good thermal contact between the Q-switch and substrate such that said substrate acts as a heat sink for said Q-switch, said Q-switch comprising a solution of a dye, a plastic, and a solvent which is deposited on said substrate.
Claim 8
Dependent Claim
12 words
The improvement as recited in claim 5 wherein said dye is bis(dimethylaminodithiobenzil)Ni.
Claim 9
Dependent Claim
14 words
The improvement as recited in claim 5, wherein said plastic is an acrylic plastic.
Claim 10
Dependent Claim
14 words
The improvement as recited in claim 7, wherein said acrylic plastic is polymethyl methacrylate.
Claim 11
Dependent Claim
13 words
The improvement as recited in claim 5, wherein said solvent is 1-2 dichloroethane.
Claim 12
Dependent Claim
53 words
In a Q-switched laser system including a laser medium and a pair of resonators forming a cavity in combination therewith, the improvement comprising a passive Q-switch mechanically coupled to a substrate which acts as a heat sink for said Q-switch, said Q-switch and substrate disposed within said cavity and detached from said resonators.
Claim 13
Dependent Claim
53 words
In a Q-switched laser system including a laser medium and a pair of resonators forming a cavity in combination therewith, the improvement comprising a passive Q-switch mechanically coupled to a substrate which acts as a heat sink for said Q-switch, said Q-switch and substrate disposed within said cavity and detached from said resonators.
Claim 14
Dependent Claim
17 words
The improvement as recited in claim 10, said substrate having an anti-reflection coating on one surface thereof.
Claim 15
Dependent Claim
60 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a copper substrate mechanically coupled to one of said resonators and a Q-switch mechanically coupled to said copper substrate to provide good thermal contact between the Q-switch and copper substrate, said copper substrate acting as a heat sink for said Q-switch.
Claim 16
Dependent Claim
60 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a copper substrate mechanically coupled to one of said resonators and a Q-switch mechanically coupled to said copper substrate to provide good thermal contact between the Q-switch and copper substrate, said copper substrate acting as a heat sink for said Q-switch.
Claim 17
Dependent Claim
69 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a substrate of a good thermal conducting material mechanically coupled to one of said resonators, a Q-switch mechanically coupled to said substrate to provide good thermal contact between the Q-switch and substrate, and means for cooling said substrate such that said substrate acts as a heat sink for such Q-switch.
Claim 18
Dependent Claim
69 words
In a Q-switched laser including a laser medium and a pair of resonators in combination therewith, the improvement comprising a substrate of a good thermal conducting material mechanically coupled to one of said resonators, a Q-switch mechanically coupled to said substrate to provide good thermal contact between the Q-switch and substrate, and means for cooling said substrate such that said substrate acts as a heat sink for such Q-switch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |