Finite Element Modeling Of Cooled High Energy Laser Optical Elements

Lawrence J Schubert

doi:10.1117/12.939268

5 January 1984 Finite Element Modeling Of Cooled High Energy Laser Optical Elements

Lawrence J Schubert

Proceedings Volume 0450, Structural Mechanics of Optical Systems I; (1984) https://doi.org/10.1117/12.939268
Event: 1983 Cambridge Symposium, 1983, Cambridge, United States

Abstract

Analysis of convectively cooled optical elements has been traditionally treated by finite element methods (FEM) techniques. NASTRAN, TAP-3, and CINDA are standard programs that have been used for predicting the thermal gradients and resultant distortions of high power laser cooled elements. Due to the high resolution of some optical ray trace codes, thermal/structural analyses using traditional NASTRAN and CINDA FEM are cost-prohibitive. The solution, is therefore, to develop high resolution analytical techniques to reduce cost and still produce the necessary optical distortion required by the optical engineers. Therefore, several thermal/structural codes have been developed to aid in the design and analysis of optical elements. The codes can interface with High Energy Laser (HEL) irradiance maps supplied by optical engineers, solve for the heat exchanger thermal gradients, and establish the necessary boundary conditions for subsequent NASTRAN FEM. The codes have been successfully used with irradiance maps with moderately large array sizes. Their use in predicting wavefront distortion has been verified through thermal testing.

Citation Download Citation

Lawrence J Schubert "Finite Element Modeling Of Cooled High Energy Laser Optical Elements", Proc. SPIE 0450, Structural Mechanics of Optical Systems I, (5 January 1984); https://doi.org/10.1117/12.939268

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available