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Stimulated Emission, Absorption Spectra, and Recombination in Epitaxial PbTe
Author(s) -
Galeskii F.,
Yunovich A. E.,
Herrmann K. H.,
Kostial H.,
Rechenberg I.,
Schäfer P.
Publication year - 1978
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.2220880234
Subject(s) - recombination , epitaxy , absorption (acoustics) , excitation , laser , spontaneous emission , materials science , radiative transfer , emission spectrum , absorption edge , atomic physics , spectral line , optoelectronics , absorption spectroscopy , stimulated emission , enhanced data rates for gsm evolution , chemistry , optics , physics , nanotechnology , band gap , telecommunications , biochemistry , layer (electronics) , quantum mechanics , astronomy , computer science , composite material , gene
Stimulated emission at temperatures up to 220 K is detected in epitaxial PbTe layers by means of a Q‐switched Nd 3+ :YAG laser. From an analysis of simultaneous measurements of the absorption edge, the conclusion is drawn that the emission is due to direct interband transitions with k ‐conservation. A unique quantitative description of generation and radiative recombination at high levels of excitation is given. The role of nonradiative processes is outlined.