Abstract

A technique is presented which makes use of photographic film to obtain quantitative measurements of the intensity distribution in a Q-switched laser beam. A gamma curve for XR (extended range) film has been made under Q-switched laser exposure conditions. Typical contours of intensity distribution from both rotating reflector and Kerr cell Q-switched laser systems are presented. Significant changes in the area of the intensity contours have been noted. These changes could result in large energy density errors in experimental results. Possible causes of these changes in intensity distribution are given.

© 1965 Optical Society of America

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