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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 18 — Sep. 3, 2007
  • pp: 11500–11506

Experimental observation of optical orientation of dipolar centers

Alexander I. Grachev, Ervin Nippolainen, and Alexei A. Kamshilin  »View Author Affiliations


Optics Express, Vol. 15, Issue 18, pp. 11500-11506 (2007)
http://dx.doi.org/10.1364/OE.15.011500


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Abstract

We report discovery of recently predicted phenomenon, optical orientation by polar way of local centers with permanent dipole moment. In a crystal of Bi12SiO20 grown in the argon atmosphere electrical current arises when the polarization of incident light is periodically modulated. Dependence of the current amplitude on the modulation frequency allows us to attribute this current to the predicted effect, which is supported by the data on light-induced dichroism and photoconductivity of the sample. A model of donor-acceptor pairs as dipolar centers is shown to be able to explain main peculiarities of optical orientation of dipolar centers in the crystal.

© 2007 Optical Society of America

OCIS Codes
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 3, 2007
Revised Manuscript: July 21, 2007
Manuscript Accepted: August 5, 2007
Published: August 24, 2007

Citation
Alexander I. Grachev, Ervin Nippolainen, and Alexei A. Kamshilin, "Experimental observation of optical orientation of dipolar centers," Opt. Express 15, 11500-11506 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-18-11500


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References

  1. A. I. Grachev and A. A. Kamshilin, "Electric polarization induced by optical orientation of dipolar centers in non-polar piezoelectrics," Opt. Express 13, 8565 (2005). [CrossRef] [PubMed]
  2. R. Oberschmid, "Conductivity Instabilities and Polarization Effects of Bi12(Ge, Si)O20 single-Crystal Samples," Phys. Status Solidi A 89, 263 (1985). [CrossRef]
  3. B. I. Sturman and V. M. Fridkin, Photovoltaic and Photorefractive Effects in Noncentrosymmetric Materials (Gordon Breach, Philadelphia, Pa., 1992).
  4. E. V. Mokrushina, M. A. Bryushinin, V. V. Kulikov, A. A. Petrov, and I. A. Sokolov, "Photoconductive properties of photorefractive sillenites grown in an oxygen-free atmosphere," J. Opt. Soc. Am. B 16, 57 (1999). [CrossRef]

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