Spectral-spatial structure of the high-power laser diodes radiation during their operation Vladimir Bliznyuk, Olga Koval, Vasiliy Parshin, Alexey Rzhanov, Alexander Tarasov and Vladislav Grigoriev EPJ Web Conf., 220 (2019) 02016 Published online: 25 October 2019 DOI: 10.1051/epjconf/201922002016