Crystalline quartz laser window assembly

Details Crystalline quartz laser window assembly Crystalline quartz laser window assembly

1985-09-24

1987-06-30

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372108, 372 99, H01S 308

Patent

active

046776400

ABSTRACT:
A window assembly for a laser uses a uniaxial crystalline material such as quartz for the window, secured directly in a hard seal to a metal tubular end component. In order to avoid significant differential thermal expansion between the quartz window and the end component, the quartz crystal is cut in a Z-normal configuration, whereby the thermal expansion and other physical properties of the window are isotropic in the plane of the window. The ability to make a reliable direct seal to a metal component offsets any disadvantages of the Z-normal configuration thought to be controlling in the prior art. Through the disclosed method for assembling and mounting the window, reflection loses are reduced to a practical minimum comparable to that of any preferred conventional window orientation.

REFERENCES:
patent: 3790900 (1974-02-01), Golser
patent: 4064466 (1977-12-01), Seki et al.
patent: 4349908 (1982-09-01), Hara et al.
Joiner et al, "Elimination of Stress-Induced Birefringence Effects in Single Crystal High Power Laser Windows", Appl. Phys. Lett., 30(9), 1 May '77.

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