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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 22, Iss. 1 — Jan. 1, 2005
  • pp: 168–175

Second-harmonic generation in the magnetic semiconductor (Cd, Mn)Te

Victor V. Pavlov, Alexandra M. Kalashnikova, Roman V. Pisarev, Ingo Sänger, Dmitri R. Yakovlev, and Manfred Bayer  »View Author Affiliations


JOSA B, Vol. 22, Issue 1, pp. 168-175 (2005)
http://dx.doi.org/10.1364/JOSAB.22.000168


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Abstract

A phenomenological analysis and experimental observations of second-harmonic generation (SHG) in magnetic semiconductors with zinc blende crystal structure ¯43m in zero and nonzero magnetic fields are presented. A magnetic field reduces symmetry and gives rise to new SHG components. SHG transmission spectra were studied in Cd_1−xMn_xTe with x = 0.24, 0.35, and 0.40. At low temperatures a narrow SHG band at 1.98 eV in the vicinity of the fundamental bandgap was observed in a (110) sample with x = 0.24. The band disappears with a temperature increase when short-range magnetic ordering vanishes. Below the bandgap a SHG signal is found that varies strongly as a function of magnetic field. We relate this phenomenon to magnetic linear birefringence and the shift of the bandgap in a magnetic field.

© 2005 Optical Society of America

OCIS Codes
(160.6990) Materials : Transition-metal-doped materials
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW

Citation
Victor V. Pavlov, Alexandra M. Kalashnikova, Roman V. Pisarev, Ingo Sänger, Dmitri R. Yakovlev, and Manfred Bayer, "Second-harmonic generation in the magnetic semiconductor (Cd, Mn)Te," J. Opt. Soc. Am. B 22, 168-175 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-1-168

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