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Author Kumar, N. ♦ Ledenev, V. I.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ AMPLITUDES ♦ ASYMMETRY ♦ DISTURBANCES ♦ EXCITATION ♦ FABRY-PEROT INTERFEROMETER ♦ HARMONIC GENERATION ♦ LASER RADIATION ♦ LASERS ♦ LAYERS ♦ PUMPING ♦ RESONATORS ♦ ELECTROMAGNETIC RADIATION ♦ ELECTRONIC EQUIPMENT ♦ ENERGY-LEVEL TRANSITIONS ♦ EQUIPMENT ♦ FREQUENCY MIXING ♦ INTERFEROMETERS ♦ MEASURING INSTRUMENTS ♦ RADIATIONS
Abstract Transition from generation of the fundamental mode to generation of the fundamental and first modes is studied numerically under the action of nonstationary asymmetric perturbations of pump rate and loss distributions in the active medium layer. It is shown that emergence of perturbations directly leads to excitation of the first mode with significant amplitude. The regime of two-mode lasing in the presence of perturbations is shown to appear at a pump rate that is smaller than the threshold one for two-mode lasing in the absence of perturbations. It is found that the first-mode amplitude has a maximum at a frequency of intermode beatings of an unfilled Fabry-Perot resonator. It is also determined that emergence of nonstationary asymmetric perturbations leads to an increase in the average intensity of the fundamental mode. Various transition regimes to two-mode lasing are compared in different types and periods of perturbations. The operability of the scheme controlling the mode composition of laser radiation is considered. (lasers)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-11-13
Publisher Place United States
Journal Quantum Electronics
Volume Number 40
Issue Number 9


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