z-logo
open-access-imgOpen Access
EXCITATION AND INTERACTION OF MULTI-MODE LATTICE VIBRATIONS IN α- LiIO3 CRYSTAL UNDER IRRADIATION OF AN INTENSE LASER
Author(s) -
徐丽雯,
雷子明,
赵汝文,
佘永柏
Publication year - 1981
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.30.138
Subject(s) - raman scattering , polariton , laser , excitation , excited state , raman spectroscopy , irradiation , materials science , photon , spectral line , lattice (music) , optics , molecular physics , crystal (programming language) , atomic physics , physics , quantum mechanics , astronomy , computer science , nuclear physics , acoustics , programming language
We have observed various spectra of stimulated Raman scattering (STRS) in a-LiIO3 crystal in different scattering geometries under irradiation of an electro-optically Q-switched second harmonic YAG laser. It is shown experimentally that more multi-mode lattice vibrations .can be excited by extra-ordinary incident photons than by ordi-nary ones. We have also observed the first and second order Stokes and anti-Stokes scat-tering lines of E1 mode, which are strong in intensity. The first, second and third order polariton Stokes and anti-Stokes lines are observed, as well as a new spectral line with a frequency shift of 496 cm-1 in anti-Stokes frequency region, which may be attributed to interactions among polaritons with various modes.Fatigue phenomena of Raman activation for the crystal have also been indicated experimentally.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here