ISTC Projects from RFNC-VNIIEF Devoted to Improving Laser Beam Quality

Abstract

Information is given about the Projects #1929 and #2631 supported by ISTC and concerned with improving laser beam quality and interesting for adaptive optics community. One of them, Project #1929 has been recently finished. It has been devoted to development of an SBS phase conjugation mirror of super- high conjugation quality employing the kinoform optics for high-power lasers with nanosecond scale pulse duration. With the purpose of reaching ideal PC fidelity, the SBS mirror includes the raster of small lenses that has been traditionally used as the lenslet in Shack–Hartmann wavefront sensor in adaptive optics. The second of them, Project #2631, is concerned with the development of an adaptive optical system for phase correction of laser beams with wavefront vortex. The principles of operation of modern adaptive systems are based on the assumption that the phase is a smooth continuous function in space. Therefore the solution of the Project tasks will assume a new step in adaptive optics.