Dynamic Optical Path Distortions in Laser Rods

Abstract

Measurements were made of the thermally induced distortions occurring in laser rods as a result of flash lamp heating. Time-resolved interferograms were obtained by placing the sample in a Mach-Zehnder interferometer and utilizing a Q-switched laser as the interferometer-illumination source. It was observed that significant distortions occur during the pumping pulse leading to diverging-lens effects in the sample rods.

Spectral and boundary effects on coupled conduction-radiation heat transfer through semitransparent solids

“…Men and Sergeev [7] have also studied simultaneous heat transfer through fused quartz, selenium-arsenic glass and cadmium sulfide for conditions modeling a melting tank. As radiative transport is significant in the manufacture and use of glass [8], semiconductors and solid state devices, the growth of large synthetic crystals [9] and effects the performance of solid state lasers [10] a more complete understanding of its nature is necessary.…”

“…(2) takes the dimensionless form dO -4N~ +q~= ~b = constant. at (10) The geometric variable, ~ = x/t, has been retained as the independent variable rather than the optical depth, where gi is the dimensionless spectral absorption coefficient, Ki/K0, and 7 o a reference optical thickness, K 0 t. The function fi(0) is…”