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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 1 — Jan. 1, 2006
  • pp: 89–91

Major improvements of the photorefractive and photovoltaic properties in potassium niobate

D. R. Evans, G. Cook, J. L. Carns, M. A. Saleh, S. A. Basun, J. M. Seim, and G. J. Mizell  »View Author Affiliations


Optics Letters, Vol. 31, Issue 1, pp. 89-91 (2006)
http://dx.doi.org/10.1364/OL.31.000089


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Abstract

Optical and electrical measurements have been made on a new codoped potassium niobate crystal ( K Nb O 3 :Fe,Ag) that yields a significant enhancement of the photorefractive and photovoltaic effects when compared with the published results for singly doped potassium niobate crystals. The codoped Ag impurity enters the K site, rather than the typical Nb site, thus changing the local field in the lattice. It is believed that Fe perturbed by the Ag in the K site is responsible for an enhancement of the linear absorption and photocurrent, as well as a probable increase in the effective trap density. An enhanced trap density is likely the cause of the increased photorefractive counterpropagating two-beam coupling efficiency.

© 2006 Optical Society of America

OCIS Codes
(040.5350) Detectors : Photovoltaic
(050.7330) Diffraction and gratings : Volume gratings
(160.5320) Materials : Photorefractive materials

ToC Category:
Photorefractive Nonlinear Optics

Citation
D. R. Evans, G. Cook, J. L. Carns, M. A. Saleh, S. A. Basun, J. M. Seim, and G. J. Mizell, "Major improvements of the photorefractive and photovoltaic properties in potassium niobate," Opt. Lett. 31, 89-91 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-1-89

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