Valentin Antonovich Orlovich (02.01.1947, v. Krasnoe, Molodechno district, Minsk region), physicist. Academician of the National Academy of Sciences of Belarus (2003; corresponding member since 2000), Doctor of Physico-Mathematical Sciences (1990), Professor (1993).
Scientific works in the field of laser physics, nonlinear optics, spectroscopy, photophysics and photobiology, laser-optical instrument making. He carried out studies of stimulated Raman scattering (SRS), the competition of nonlinear-optical effects in various media, the macroscopic manifestations of quantum noise in stimulated Raman radiation fluctuations. He discovered and studied the emergence of new types of Raman solitons, the generation of radiation with super-Gaussian statistics, an increase in the spectral contrast and the appearance of pulsed instabilities in the case of Raman scattering. Received the SRS conversion of the radiation frequency of a microchip of mini-lasers with continuous diode pumping, cw lasers and femtosecond lasers in crystalline media, which opened up prospects for the construction and practical use of completely solid-state SRS converters. He developed methods of nonlinear spectroscopy of nanofemetosecond time resolution, created coherent and spontaneous Raman scattering spectrometers, with the help of which he investigated the effects in the interaction of metalloporphyrins with solvents, DNA and DNA modeling compounds. He proposed high-performance resonator circuits for lasers of various types, on the basis of which he created frequency AIG: Nd-laser with high power parameters, a laser complex providing the generation of laser radiation continuously tunable in the range of 0.26-8.1 μm; effective sources of radiation-safe radiation and parametric light generators; fully solid-state narrowband laser tunable in the 188-1800 nm region; various types of WRC converters.
Author of about 500 scientific papers, 9 inventions.
State Prize of the Republic of Belarus in 2000 for the study of nonlinear optical phenomena and the creation on this basis of new highly efficient sources of laser radiation. The Leninist Komsomol Prize of Belarus in 1978 for the study of laser radiation conversion processes and the development on its basis of high-power coherent light sources with a smooth frequency tuning in the visible, ultraviolet and infrared ranges.
Awarded with the Medal of Francisk Skaryna (2007).