Efficient lasing of a mixture of organic dyes at 610 and 670 nm

Abstract

The efficiency of the lasing regime of a pulsed tunable laser at the “exotic” wavelengths of 610 and 670 nm, which are needed in nuclear physics, is investigated. A method for performing model calculations of the active media for such a laser, i.e., working mixtures of high-molecular-weight dyes, is developed. The conditions specifying a quasiequilibrium window, in which the achievement of high output characteristics is possible for such a mixture at assigned wavelengths, are derived. It is interpreted on the basis of the law of alternating nonequilibria in the theory of nonequilibrium states. The results obtained are verified experimentally: a high-power miniature pulsed laser with an active medium consisting of a mixture of dye solutions with high output characteristics at the assigned wavelengths of 610 and 670 nm is created.