title: Energy-dependent losses of high-power laser radiation in liquid nitrogen.
abstract: We observed energy-dependent losses in the transmission of high-power CO(2) 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.
authors.forename: H D
authors.initials: HD
authors.lastname: Böhm
authors.forename: L
authors.initials: L
authors.lastname: Werner
authors.forename: H
authors.initials: H
authors.lastname: Jetter