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Journal of Optical Technology

Journal of Optical Technology

| SIMULTANEOUS RUSSIAN-ENGLISH PUBLICATION

  • Vol. 80, Iss. 2 — Feb. 1, 2013
  • pp: 77–79

Interaction effects of exciton-polaritons propagating in superlattices with a sound wave

R. A. Ayukhanov, Yu. V. Gulyaev, and G. N. Shkerdin  »View Author Affiliations


Journal of Optical Technology, Vol. 80, Issue 2, pp. 77-79 (2013)
http://dx.doi.org/10.1364/JOT.80.000077


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Abstract

An expression is obtained for the oscillator strength of the main exciton transition, computed using a variational procedure in the approximation of an infinitely deep quantum well. It is shown that this quantity is a factor of (aB/λ)2 greater than the oscillator strength in the bulk case (aB is the Bohr radius of the bulk exciton, and λ is the variational parameter), and this increases the polariton gap. The modulation effect by a sound wave of the reflectance of light at the longitudinal-exciton frequency in superlattices is considered, along with the diffraction of light at the sound wave. It is shown that these effects can be achieved in superlattices at temperatures one and a half times as great as for bulk crystals and with weaker requirements on their frequency.

© 2013 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.1040) Optical devices : Acousto-optical devices

History
Original Manuscript: May 3, 2012
Published: April 9, 2013

Citation
R. A. Ayukhanov, Yu. V. Gulyaev, and G. N. Shkerdin, "Interaction effects of exciton-polaritons propagating in superlattices with a sound wave," J. Opt. Technol. 80, 77-79 (2013)
http://www.opticsinfobase.org/jot/abstract.cfm?URI=jot-80-2-77


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References

  1. R. A. Ayukhanov, Yu. V. Gulyaev, and G. N. Shkerdin, “Features of acoustooptic interaction in the region of exciton resonance,” Fiz. Tekh. Poluprovodn. 20, 1933 (1986) [Semiconductors20, 1214 (1986)].
  2. D. S. Chemla, “Quasi-two-dimensional excitons in GaAs/AlxGa1-xAs semiconductor multiple quantum well structures,” Helv. Phys. Acta 56, 607 (1983).
  3. R. A. Ayukhanov, Yu. V. Gulyaev, and G. N. Shkerdin, “Linear coefficients of photoelasticity in layered structures with quantum wells close to resonances of quasi-two-dimensional excitons, taking into account the finiteness of the width of the well,” Fiz. Tverd. Tela 35, 1916 (1993) [Phys. Solid State35, 957 (1993)].
  4. R. A. Ayukhanov and G. N. Shkerdin, “Linear coefficients of photoelasticity in multilayer quantum well structures having a sloping bottom in exciton resonance regions,” Fiz. Tverd. Tela 40, 1740 (1998) [Phys. Solid State40, 1582 (1998)]. [CrossRef]
  5. S. A. Moskalenko, Introduction to the Theory of High-Density Excitons (Shtiintsa, Kishinev, 1983).
  6. Yu. V. Gulyaev and G. N. Shkerdin, “On diffraction theory of electromagnetic waves at sound in semiconductors,” Radiotekh. Elektron. 19, 1075 (1974).

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