Aleksandr Agashkov
Alexander Vasilevich Agashkov was born on April 20, 1951, in Grodno, Belarus. He is associated with Belarusian scientific institutions and has conducted research in optical physics, laser systems, liquid crystals, and interferometric methods.
Agashkov studied at Belorussian State University, where he completed a Master of Science degree on November 30, 1973. His later scientific work developed in the fields of optics, laser physics, photorefractive materials, liquid-crystal systems, and optical measurement.
Agashkov began his documented research career at the Institute of Electronics of the National Academy of Sciences of Belarus, where he served as a senior researcher from November 30, 1988, through November 30, 2011. His early work included the dynamics and mode-locked generation of neodymium lasers with positive electrooptic feedback. He subsequently investigated laser-induced optical recording, photoelectric and orientational phenomena in nematic liquid crystals, dynamic and resonant photorefractivity, and photoconductive orienting layers. His later research extended to differential polarization interferometry, optical-path measurements in thin metamaterial layers, and two-beam interferometry. He has been identified as a leading scientific researcher and candidate of physical and mathematical sciences at the B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus in Minsk.
Conducted research on the dynamic enhancement of the photorefractive effect in nematic liquid crystals under an applied alternating electric field, including work that reported a two-order-of-magnitude increase in multi-wave-mixing efficiency.
Investigated optical data recording by laser pulses in liquid-crystal cells with azo-modified surfaces and demonstrated reversible and static recording associated with photoisomerization-induced molecular reorientation.
Developed research on resonant domain photorefractive structures in liquid-crystal and photoconducting-layer systems, obtaining a two-order-of-magnitude increase in grating diffraction efficiency under resonant conditions.
Conducted research on methods using orthogonally polarized strips for LiF crystals.
Conducted research on pulsed solid-state lasers with electrooptical feedback.
Co-developed a differential polarization interferometer for direct measurement of phase shifts and optical path length in thin films and metamaterial layers with reflection and absorption losses.
Contributed to research on two-beam interferometry with determination of the sign of the phase shift.
(Co-authored with S. V. Serak and J. Parka; reports dynami...)
2002(United States patent US9778019B2, co-invented with Nikola...)
2017(Study of the direction of interference-fringe displacemen...)
2022(Study of photorefractive properties of nematic liquid-cry...)
2010(Research article on the dynamics of single-pulse stimulat...)
1990(Study of mode-locked transverse-mode generation in a neod...)
1986(Co-authored with Yu. F. Morgun; published in Kvantovaya E...)
1984(Co-authored with S. V. Serak and V. Yu. Reshetnyak; exami...)
2001(Co-authored with A. A. Kovalev and J. Parka; proposes a m...)
2005(Co-authored with N. S. Kazak; describes a differential po...)
2019Agashkov is documented as the son of Feodossya Akimovna and Vasily Mikhailovich and as the husband of Tatyana Dmitrievna. Anna Alexandrovna and Dmitry Alexandrovich are recorded as his children.
