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Title: Specific features of two-photon optical nutation in a system of biexcitons in semiconductors

Abstract

Specific features of two-photon nutation in a system of coherent biexcitons in CuCl-type semiconductors are studied. It is shown that, depending on the parameters of the system, nutation represents a process of periodic conversion of photon pairs into biexcitons and vice versa. The possibility of phase control of optical nutation is predicted.

Authors:
 [1];  [2]
  1. Shevchenko Pridnestrov'e State University (Moldova, Republic of), E-mail: tdsu4@idknet.com
  2. Academy of Sciences of Moldova, Institute of Applied Physics (Moldova, Republic of)
Publication Date:
OSTI Identifier:
21072473
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 104; Journal Issue: 5; Other Information: DOI: 10.1134/S1063776107050147; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COPPER CHLORIDES; EXCITONS; PERIODICITY; PHOTONS; SEMICONDUCTOR MATERIALS

Citation Formats

Khadzhi, P. I., and Vasil'ev, V. V. Specific features of two-photon optical nutation in a system of biexcitons in semiconductors. United States: N. p., 2007. Web. doi:10.1134/S1063776107050147.
Khadzhi, P. I., & Vasil'ev, V. V. Specific features of two-photon optical nutation in a system of biexcitons in semiconductors. United States. doi:10.1134/S1063776107050147.
Khadzhi, P. I., and Vasil'ev, V. V. Tue . "Specific features of two-photon optical nutation in a system of biexcitons in semiconductors". United States. doi:10.1134/S1063776107050147.
@article{osti_21072473,
title = {Specific features of two-photon optical nutation in a system of biexcitons in semiconductors},
author = {Khadzhi, P. I. and Vasil'ev, V. V.},
abstractNote = {Specific features of two-photon nutation in a system of coherent biexcitons in CuCl-type semiconductors are studied. It is shown that, depending on the parameters of the system, nutation represents a process of periodic conversion of photon pairs into biexcitons and vice versa. The possibility of phase control of optical nutation is predicted.},
doi = {10.1134/S1063776107050147},
journal = {Journal of Experimental and Theoretical Physics},
number = 5,
volume = 104,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
  • The peculiarities of two-photon nutation in a system of coherent biexcitons in CuCl semiconductors are considered taking into account the elastic biexciton - biexciton interaction. It is shown that depending on the system parameters, optical nutation represents a process of periodic transformation of photon pairs into biexcitons and vice versa. The possibility of exercising the phase control of the optical nutation process is predicted. (nonlinear optical phenomena)
  • A version of the one-photon probing of optical properties of semiconductors is presented under conditions when a high-power pump pulse excites biexcitons from the ground state of a crystal due to two-photon absorption. The existence of a Lorentzian absorption peak is predicted and the quasi-polariton dispersion law is found in the region where a real energy level is absent. The temporal evolution of the absorption band under the action of ultrashort pulses is studied. (nonlinear optical phenomena)
  • The features of light reflection from the interface of a semi-infinite semiconductor are studied upon two-pulse, two-photon excitation of biexcitons from the crystal ground state. It is shown that the reflectivity is a complex multistable function of the amplitudes of the fields of incident pulses. The appearence of solitary closed domains or horn-shaped structures is predicted. (nonlinear optical phenomena)
  • It is shown that upon two-photon excitation of bi-excitons from the ground state by a powerful optical pulse, a weak laser pulse is amplified within the M band. (nonlinear optical phenomena and devices)
  • Based on the time-dependent perturbation technique, analytical investigation of optical nutation has been made in direct-gap semiconductors such as GaAs, InSb, and Hg/sub 1-x/Cd/sub x/Te. The crystals are considered to be irradiated by short pulsed (in the picosecond regime) moderate power near-resonant lasers produced significant density of optically-induced free electron-hole pairs. Incoherent dephasing mechanisms have been introduced phenomenologically into the coherent radiation-semiconductor interaction model. The theory, on application to the case of a specific crystal such as Hg/sub 1-x/Cd/sub x/Te with x = 0.18, irradiated by a pulsed 10.6 lambdam CO/sub 2/ laser, manifests distinctly the occurrence of ringing behaviormore » in the transmitted intensity, transient dispersion, and absorption even in the absence of any theoretical averaging or the consideration of the effective density of states.« less