Accession Number : AD0697449

Title :   THERMAL DEFOCUSING OF BRIEF LASER PULSES,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Skinner,D. R.

Report Date : 19 MAY 1969

Pagination or Media Count : 2

Abstract : A theoretical expression is derived for the expansion of a focused Gaussian laser beam due to thermal changes in the refractive index of air. The expression is valid only for pulse lengths for which thermal diffusion can be ignored at the beam waist. The area of the focused spot is shown to increase linearly with pulse energy. (Author)

Descriptors :   (*LIGHT PULSES, FOCUSING), LASERS, AIR, REFRACTIVE INDEX, THERMAL PROPERTIES

Subject Categories : Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE