Abstract
We observed energy-dependent losses in the transmission of high-power CO2 and HF laser radiation in liquid nitrogen resulting from scattering on small gas bubbles. The formation of these bubbles can be explained by a mechanism involving absorption of a small part of the laser radiation by microscopic suspended ice particles that leads to the evaporation of the surrounding cryogenic liquid. Even for a low concentration of these particles, the losses are significant.
© 1981 Optical Society of America
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