Open AccessГенерация второй оптической гармоники и ее фотоиндуцированная динамика в сегнетоэлектрике-полупроводнике Sn-=SUB=-2-=/SUB=-P-=SUB=-2-=/SUB=-S-=SUB=-6-=/SUB=-
Author(s) -
К.А. Брехов,
К.А. Гришунин,
Д. В. Афанасьев,
Sergey Semin,
Н.Э. Шерстюк,
Е.Д. Мишина,
A.V. Kimel
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.01.45285.179
Subject(s) - femtosecond , ultrashort pulse , excited state , second harmonic generation , materials science , laser , polarization (electrochemistry) , nonlinear optical , optoelectronics , semiconductor , optics , nonlinear optics , ferroelectricity , atomic physics , nonlinear system , physics , chemistry , quantum mechanics , dielectric
By means of optical pump–probe technique, the ultrafast dynamics of nonlinear optical response of the ferroelectric semiconductor Sn_2P_2S_6 crystal excited with a femtosecond laser pulse has been investigated. It has been shown that, under the action of femtosecond pulses, change in optical second harmonic generation occurs in the sample, which can be due to screening of existing electric polarization.