0 Lecturers of the Department of Labor Protection, Standardization and Certification, Professor Trishch Roman, Associate Professor Artyukh Svetlana, Associate Professor Burdeynaya Viktoriya, Dean of the Department of Energy, Energy Saving Technologies and Automation of Energy Processes Associate Professor Natalya Antonenko took part in CAOL * 2019 (INTERNATIONAL CONFERENCE ON ADVANCED OPTOELECTRONICS AND LASERS), which took place on September 6-8, 2019 in the city of Sozopol (Bulgaria). The organizers were: IEEE (Institute of Electrical and Electronics Engineers), Technical University of Sofia (Bulgaria), Kharkiv National University. V.N. Karazin, Kharkov National University of Radio Electronics, Odessa National University. I.I. Mechnikov.