Broderick Neil G. R., Eggleton Benjamin J., Peacock Anna C., Golant Konstantin M., Kuznetsov Petr I., Laktaev Ivan D., Smirnov Alexander M. Features of nonlinear absorption of Bi2Te3-xSex and Bi2-xSbxTe3-ySey films. In: SPIE Photonics Europe, 22-26 апреля 2018 г., Strasbourg, France , р. 95.
Полный текст не доступен из этого репозитория.Аннотация
The monocrystalline Bi2Te3-xSex and Bi2-xSbxTe3-ySey films of various compositions and thickness were synthesized by MOCVD on sapphire substrates1 . The transmission of laser pulses (duration τ≈35 ps, wavelength λ=1064 nm) through the films was measured as a function of radiation intensity with the aim to optimize functionality of these films deposited on different substrates as saturable absorbers for the application in passively mode-locked 1-2 μm wavelength lasers. There was investigated nonlinear absorption of films of various compositions and thickness with measured saturation intensity ≈ 20 MW/cm2 for Bi2Te3-xSex and 45 MW/cm2 for Bi2-xSbxTe3-ySey. Data obtained can be explained by the classical nonlinearity – phase space filling in a quantum well2 . As it was established earlier3 , the semiconductor conductivity type of the film without light interaction can be changed to the metallic conductivity type in the case of light interaction with the film, that is strongly nonlinear depends on the light intensity. At the same time, with a metallic conductivity type, the film becomes vulnerable for high light intensity.
| Тип объекта: | Доклад на конференции или семинаре (Доклад) |
|---|---|
| Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!: | Голант, Кузнецов, Лактаев, Смирнов |
| Подразделения (можно выбрать несколько, удерживая Ctrl): | 195 лаб. волоконно-оптических технологий 226 лаб. волоконных световодов и элементов на их основе |
| URI: | http://cplire.ru:8080/id/eprint/4918 |
 |
Изменить объект |
