CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 0216 > Article
Paper
5 August 1980 Mirrors And Windows In Power Optics
Claude A. Klein
Author Affiliations +
Proceedings Volume 0216, Optics in Adverse Environments II; (1980) https://doi.org/10.1117/12.958463
Event: 1980 Los Angeles Technical Symposium, 1980, Los Angeles, United States
Abstract
High-energy laser (HEL) systems involve an optical train consisting of mirrors and windows, which may compromise the system's operation because of unavoidable irradiance-mapping aberrations resulting from the absorption of some fraction of the incident laser-beam energy. This paper describes an analytic investigation of relevant processes and discusses how laser-driven mirror/window distortions may affect the performance of HEL systems with regard to focal intensities and on-target fluences. An approximate expression for the brightness at the Gaussian focus is derived on the basis of the AFWL far-field degradation model and shown to be simple enough to allow HEL system designers to assess the capability of a contemplated optical train and to evaluate its behavior as a function of beam-power level and laser run-time. Two figures of merit are introduced for the purpose of characterizing the response of power-optics mirrors and windows in terms of thermally induced wavefront errors. On using these figures of merit (FoMm and FoMw), an important result emerges: If the window-pane and the mirror-faceplate material both have positive distortion coefficients, window lensing suppresses the steady-state mirror-related phase aberration at time tc = N (D /d)2 FoMW/FoMM, where N is the number of relay mirrors and D /d is the telescope magnification. In applying these considerations to a model system operating at chemical laser wavelengths, we find that CVD-ZnSe output windows can be quite beneficial in maximizing either the peak irradiance on target or the short-pulse energy delivery capability of contemporary HEL systems.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Claude A. Klein "Mirrors And Windows In Power Optics", Proc. SPIE 0216, Optics in Adverse Environments II, (5 August 1980); https://doi.org/10.1117/12.958463
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 11 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Mirrors
Systems modeling
Near field optics
Thermography
Wavefronts
Absorption
Relays
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top