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Phonon Shifts in GaP Due to Temperature and Pressure Rise Induced by a Laser Beam
Author(s) -
Irmer G.,
Monecke J.,
Bairamov B. Kh.,
Toporov V. V.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221360211
Subject(s) - thermoelastic damping , phonon , beam (structure) , materials science , laser , raman spectroscopy , irradiation , laser beams , atomic physics , condensed matter physics , optics , thermal , thermodynamics , physics , nuclear physics
Raman spectroscopic measurements of the TO‐ and LO‐phonon shifts of GaP in the temperature field induced by a laser beam are performed and compared with measurements in a uniformly heated sample. The temperature and the stress distribution in the sample volume irradiated by the laser beam are calculated and their influence onto the phonon frequencies is discussed with the result that thermoelastic effects besides the temperature rise due to the laser beam cannot be neglected, in general.