Prof. Oleksiy Kuleshov is Deputy Head of the Department of Vacuum Electronics at the O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine in Kharkiv, Ukraine. He leads research and development of compact, frequency-tunable sources of electromagnetic radiation in the millimeter-wave and terahertz ranges.
In December 2025, he joined the University of California, Davis, as a Fulbright Visiting Scholar in the Faculty of Electrical and Computer Engineering.
Prof. Kuleshov received his M.S. degree in Radio Physics and Electronics from V. N. Karazin Kharkiv National University. He earned his Ph.D. (2010) and Doctor of Sciences (2021) degrees in Physical Electronics from the O. Ya. Usikov Institute for Radiophysics and Electronics of the NAS of Ukraine.
From 2012 to 2020, he held multiple appointments as a Visiting Professor at the Research Center for Development of Far-Infrared Region, University of Fukui, Japan, where he contributed to the development of Cherenkov oscillators and high-frequency gyrotrons for DNP-NMR spectroscopy and related applications. In 2014, he was a Visiting Fellow at the Institute for Protein Research, Osaka University, Japan, where he was responsible for ensuring long-term, high-stability operation of a 460-GHz continuous-wave gyrotron used for 700-MHz DNP-NMR spectroscopy.