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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 19 — Sep. 23, 2013
  • pp: 21790–21799

Photorefractive inhibition of second harmonic generation in periodically poled MgO doped LiNbO3 waveguide

Guohui Li, Yanxia Cui, and Jing Wang  »View Author Affiliations

Optics Express, Vol. 21, Issue 19, pp. 21790-21799 (2013)

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The inhibition of high power second-harmonic generation (SHG) in a periodically poled MgO doped LiNbO3 (PPMgLN) waveguide operating at near the room temperature has been interpreted by systematically investigating the SHG process based on the coupled mode equations in combination with the photorefraction and the temperature nonuniformities. The simulation results show that significant refractive index nonuniformities are induced by the photorefractive effect along the irradiated zone while those induced by the thermal effect are very minor. Therefore, the photorefractive effect instead of the thermal effect is the main factor that inhibits the SHG conversion efficiency. In addition, comparison of PPMgLN waveguides with different transverse dimensions shows that the waveguides with larger transverse dimension is advantageous in high power SHG since the photorefractive effect is weaker.

© 2013 OSA

OCIS Codes
(130.3730) Integrated optics : Lithium niobate
(190.2620) Nonlinear optics : Harmonic generation and mixing
(130.7405) Integrated optics : Wavelength conversion devices

ToC Category:
Integrated Optics

Original Manuscript: June 11, 2013
Revised Manuscript: August 24, 2013
Manuscript Accepted: August 27, 2013
Published: September 9, 2013

Guohui Li, Yanxia Cui, and Jing Wang, "Photorefractive inhibition of second harmonic generation in periodically poled MgO doped LiNbO3 waveguide," Opt. Express 21, 21790-21799 (2013)

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