Subterahertz self-oscillations of depletion of electron populations in the conduction band of GaAs in the presence of pumping and intrinsic stimulated radiation

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Semiconductors

DOI:https://doi.org/10.1134/S1063782610090022· OSTI ID:21562230

Ageeva, N N; Zabegaev, D N; Krivonosov, A N ^[1]

---

1. Russian Academy of Sciences, Kotel'nikov Institute of Radio Engineering and Electronics (Russian Federation)

It was previously found that, during picosecond optical pumping, ultrafast interrelated self-modulations of fundamental absorption of light and intrinsic stimulated picosecond radiation emerge in GaAs. In this study, quantitative evaluations confirming the assumption that the mentioned self-modulations are caused by self-oscillations of depletion of electron populations in the conduction band are made. The relation for the frequency of self-oscillations of depletion of populations is obtained. The presence of conditions for self-organization leading to the emergence of periodic nonlinear waves in nonequilibrium media, which is photogenerated electron-hole plasma with depletions of populations, is shown. As a result, in a series of studies, including this one, it is found that the collective excitation of charge carriers-self-oscillations of depletion of populations of the conduction band-emerges during pumping in GaAs under the effect of intrinsic stimulated radiation.

• OSTI ID: 21562230
• Journal Information: Semiconductors, Vol. 44, Issue 9; Other Information: DOI: 10.1134/S1063782610090022; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
CHARGE CARRIERS
COLLECTIVE EXCITATIONS
ELECTRONS
EVALUATION
GALLIUM ARSENIDES
MODULATION
OPTICAL PUMPING
OSCILLATIONS
PERIODICITY
POPULATIONS
SOLID-STATE PLASMA
ARSENIC COMPOUNDS
ARSENIDES
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
GALLIUM COMPOUNDS
LEPTONS
PLASMA
PNICTIDES
PUMPING
SORPTION
VARIATIONS