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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 13 — Jul. 1, 2010
  • pp: 2136–2138

Photorefractive effect in undoped aluminum nitride

Toru Nagai, Ryushi Fujimura, Tsutomu Shimura, and Kazuo Kuroda  »View Author Affiliations


Optics Letters, Vol. 35, Issue 13, pp. 2136-2138 (2010)
http://dx.doi.org/10.1364/OL.35.002136


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Abstract

We report our observation of the photorefractive effect in undoped aluminum nitride. We measured the coupling constant and the formation rate as a function of pump intensity at a wavelength of 405 nm in a two-wave mixing experiment. The photorefractive gain coefficient was 0.47 cm 1 at I = 6.9 W / cm 2 , and the actual saturated value was probably larger than this. The time constant was 59 ms at I = 1.0 W / cm 2 . In addition to a refractive index grating, an absorption grating was also formed, which is attributed mainly to an ionized trap density modulation process.

© 2010 Optical Society of America

OCIS Codes
(130.5990) Integrated optics : Semiconductors
(160.5320) Materials : Photorefractive materials
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 2, 2010
Revised Manuscript: May 31, 2010
Manuscript Accepted: May 31, 2010
Published: June 17, 2010

Citation
Toru Nagai, Ryushi Fujimura, Tsutomu Shimura, and Kazuo Kuroda, "Photorefractive effect in undoped aluminum nitride," Opt. Lett. 35, 2136-2138 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-13-2136

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