20 September 2002 Relation between temperature tuning value and grating period deviation of periodically poled crystal for SHG
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Abstract
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 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 (formula available in paper)to approximately ΔΛ curve will go down.
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Baigang Zhang, Jianquan Yao, Degang Xu, Yanguang Yu, Guiyan Zang, Peng Wang, Yong Zhang, "Relation between temperature tuning value and grating period deviation of periodically poled crystal for SHG", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.471894; https://doi.org/10.1117/12.471894
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