← Back to Patent Explorer
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
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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)

US3500234A Cited
US3546620A Cited
US3613024A Cited
US3660777A Cited
US4105953A Cited

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag