The Application Of Angular Resolved Scatter To The Documentation Of Damage To Smooth Mirrors

Calvin H Gillespie; David F Edwards; John C Stover

doi:10.1117/12.939481

3 June 1987 The Application Of Angular Resolved Scatter To The Documentation Of Damage To Smooth Mirrors

Calvin H Gillespie, David F Edwards, John C Stover

Proceedings Volume 0675, Stray Radiation V; (1987) https://doi.org/10.1117/12.939481
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

Mirrors designed to survive exposure to damaging radiation are being irradiated and then measured to determine the mechanisms of failure and to improve the ability of analysis codes to predict an exposure damage threshold. The differences between survival and catastrophic failure are easily recognized and recorded by macro photography. However, the goal of this project is to quantify the onset of mirror degradation utilizing non contact methods that have good measurement sensitivity to small changes in reflectivity (material properties) and light scatter (roughness). A new angular resolved scatterometer is described that has an extended dynamic range and integrated analysis capable of displaying the surface power spectral density (PSD) over large bandwidths of surface spatial frequencies. Graphical displays of the scattered light power before and after exposure to the radiation are compared and integrated over equivalent spatial bandwidths of sensitivity for other instruments to compare calculated RMS roughness values.

Citation Download Citation

Calvin H Gillespie, David F Edwards, and John C Stover "The Application Of Angular Resolved Scatter To The Documentation Of Damage To Smooth Mirrors", Proc. SPIE 0675, Stray Radiation V, (3 June 1987); https://doi.org/10.1117/12.939481

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Mirrors

Coating

Light scattering

Surface roughness

Calibration

Sensors

Optical testing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years