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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 2 — Jan. 18, 2010
  • pp: 1076–1084

Second harmonic generation study of internally-generated strain in bismuth-substituted iron garnet films

Pradeep Kumar, A. I. Maydykovskiy, Levy Miguel, N. V. Dubrovina, and O. A. Aktsipetrov  »View Author Affiliations


Optics Express, Vol. 18, Issue 2, pp. 1076-1084 (2010)
http://dx.doi.org/10.1364/OE.18.001076


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Abstract

The present article highlights the lattice-imperfection and compositional origins of the nonlinear optical response in bismuth-substituted iron garnet films. In particular the roles of lattice mismatch strain and micro-strain on second harmonic generation in (Bi,Y)3(Fe,Ga)5O12 films are elucidated based on experimental findings. It is found that lattice mismatch strain drives the second harmonic signal in (Bi,Y)3(Fe,Ga)5O12 films, in agreement with theoretical predictions; however micro-strain was found not to correlate significantly with the second harmonic signal at the micro-strain levels present in these samples. The present study also elaborates on the influence of the film’s constitutive elements and finds the nonlinear response to increase with yttrium concentration.

© 2010 Optical Society of America

OCIS Codes
(160.3820) Materials : Magneto-optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials
(310.0310) Thin films : Thin films

ToC Category:
Materials

History
Original Manuscript: November 17, 2009
Revised Manuscript: December 29, 2009
Manuscript Accepted: December 30, 2009
Published: January 7, 2010

Citation
Pradeep Kumar, A. I. Maydykovskiy, Miguel Levy, N. V. Dubrovin, and O. A. Aktsipetrov, "Second harmonic generation study of internallygenerated strain in bismuth-substituted iron garnet films," Opt. Express 18, 1076-1084 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-2-1076


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