Search academic texts

Information × Registration Number 0216U005360, 0115U004250 , R & D reports Title Development of methodological base and research of fast processes in nanostructured materials for high-speed optoelectronics. popup.stage_title Head Blonskyi Ivan Vasylyovych, Registration Date 22-01-2016 Organization Institute of physics NASU popup.description2 The physical principles are developed, and new techniques for wide-spectrum measurements of secondary radiation in the range of 280-810 nm with 300 fs time resolution for research temperature range of 1,6-300 C are technically implemented. Methods are implemented in CCUE "Laser Femtosecond Complex" at the Institute of Physics of NAS of Ukraine. The base of the new basic methodology is the Kerr effect - the phenomenon of birefringence induced by electrical component of a powerful light wave. This method of timeresolved spectroscopy with optical kerr gate is one of the most promising research of kinetics of secondary radiation, which provides high temporal resolution, the possibility of spectral-kinetic studies in a wide range of wavelengths, provides relatively ease adjustment and adaptability to the automation of process of measurements. Spectral, temporal and spatial characteristics supercontinuum radiation and physical phenomena that make its essence in solid-state media, including nanostructured materials are studied. In addition, with a view to multiplication and management of secondary beams intensities over time, the scalar diffraction theory for interference in a multibeam scheme is adapted, based on periodic phase structures. The method of making periodic phase modulator is tested, the experimental research in the angular intensity distribution of laser radiation spectra multipliers are carried out. The original system of selfcompression of a femtosecond laser pulse is developed for use in "pump-probe" timeresolved research. Product Description popup.authors Блонський Іван Васильович Гнатовський Олександр Володимирович Головченко Олена Миколаївна Держипольська Людмила Анатоліївна Дмитрук Ігор Миколайович Дмитрук Андрій Миколайович Зубрілін Микола Глібович Кадан Віктор Миколайович Коренюк Петро Іванович Негрійко Анатолій Михайлович Святенко Артем Ігоревич Шинкаренко Євген Вікторович popup.nrat_date 2020-04-02 Close