Use of disperse two-phase media in control of the laser radiation characteristics

An experimental investigation was made of the use of disperse media consisting of alkali halide crystals containing color centers (LiF:F₂⁺, LiF:F₂^–, or NaF:F₂⁺), suspended in an alcohol, as bleachable laser switches and "soft" apertures. Excitation of a colloidal solution with coherent radiation resulted in stimulated emission of infrared radiation.