Relation between temperature tuning value and grating period deviation of periodically poled crystal for SHG

Details Relation between temperature tuning value and grating period deviation of periodically poled crystal for SHG Relation between temperature tuning value and grating period deviation of periodically poled crystal for SHG

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4919...97z&link_type=abstract

Advanced Materials and Devices for Sensing and Imaging. Edited by Yao, Jianquan; Ishii, Yukihiro. Proceedings of the SPIE, Volu

Physics

Scientific paper

It's unavoidable that there is a deviation (called "grating period deviation" in this paper) between the real QPM period of periodically poled crystal and the ideal value to cause phase mismatching. By tuning temperature, we can get phase matching again. We present the formula of the relation between temperature tuning value ΔT and grating period deviation ΔΛ of periodically poled crystal for SHG in order to get phase matching. Our numerical analyses show that ΔT/i> of PPLN-SHG is approximately directly proportional to the ΔΛ, and when the pumping wavelength or the quasi-phase matching order increase, the slope of ΔT to approximately ΔΛ curve will go down.

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