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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: George I. Stegeman
  • Vol. 22, Iss. 10 — Oct. 1, 2005
  • pp: 2229–2236

Photorefractive fixing phenomena in α-phase proton-exchanged LiNbO 3 waveguides

Gonzalo de la Paliza, Jesús Carnicero, Angel García-Cabañes, Mercedes Carrascosa, and José M. Cabrera  »View Author Affiliations


JOSA B, Vol. 22, Issue 10, pp. 2229-2236 (2005)
http://dx.doi.org/10.1364/JOSAB.22.002229


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Abstract

Fixing experiments have been carried out in undoped α-phase proton-exchanged LiNbO 3 waveguides at room temperature and 110°C. Above room temperature, the recording kinetics of the diffraction efficiency exhibits a maximum η max and then decays to zero. Upon raising the temperature, η max decreases and the associated rise and decay times become progressively shorter. After fixing at 90°C and subsequent optical developing at room temperature, the developed value rises up to η dev 2.5 η max , showing a lifetime of a few hours in the dark and a few days under homogeneous illumination. Time constants for recording, dark decay, and developing have been measured as a function of temperature. Experimental dependences are reasonably simulated by using the standard model for fixing with the same parameters as with bulk LiNbO 3 , except the electron thermal ionization rate and the proton concentration, which are much greater in α-phase guides.

© 2005 Optical Society of America

OCIS Codes
(130.3130) Integrated optics : Integrated optics materials
(130.3730) Integrated optics : Lithium niobate
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.5330) Nonlinear optics : Photorefractive optics

ToC Category:
Nonlinear Optics

Citation
Gonzalo de la Paliza, Jesús Carnicero, Angel García-Cabañes, Mercedes Carrascosa, and José M. Cabrera, "Photorefractive fixing phenomena in alpha-phase proton-exchanged LiNbO3 waveguides," J. Opt. Soc. Am. B 22, 2229-2236 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-10-2229


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References

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