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Title: Laser window with annular grooves for thermal isolation

Abstract

A laser window or other optical element which is thermally loaded, heats up and causes optical distortions because of temperature gradients between the center and the edge. A number of annular grooves, one to three or more, are formed in the element between a central portion and edge portion, producing a web portion which concentrates the thermal gradient and thermally isolates the central portion from the edge portion, producing a uniform temperature profile across the central portion and therefore reduce the optical distortions. The grooves are narrow and closely spaced with respect to the thickness of the element, and successive grooves are formed from alternate sides of the element.

Inventors:
; ;
Issue Date:
OSTI Identifier:
7137736
Application Number:
ON: DE84011114
Assignee:
Dept. of Energy ERA-09-026674; EDB-84-084891
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASERS; WINDOWS; STRESSES; TEMPERATURE DISTRIBUTION; OPENINGS; 420300* - Engineering- Lasers- (-1989)

Citation Formats

Warner, B.E., Horton, J.A., and Alger, T.W. Laser window with annular grooves for thermal isolation. United States: N. p., 1983. Web.
Warner, B.E., Horton, J.A., & Alger, T.W. Laser window with annular grooves for thermal isolation. United States.
Warner, B.E., Horton, J.A., and Alger, T.W. Wed . "Laser window with annular grooves for thermal isolation". United States.
@article{osti_7137736,
title = {Laser window with annular grooves for thermal isolation},
author = {Warner, B.E. and Horton, J.A. and Alger, T.W.},
abstractNote = {A laser window or other optical element which is thermally loaded, heats up and causes optical distortions because of temperature gradients between the center and the edge. A number of annular grooves, one to three or more, are formed in the element between a central portion and edge portion, producing a web portion which concentrates the thermal gradient and thermally isolates the central portion from the edge portion, producing a uniform temperature profile across the central portion and therefore reduce the optical distortions. The grooves are narrow and closely spaced with respect to the thickness of the element, and successive grooves are formed from alternate sides of the element.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {7}
}