Characterization of thermal absorption and nonlinear absorption in KDP/DKDP crystals with different orientations

Xiaocong Peng; Yuan'an Zhao; Dawei Li; Guohang Hu; Long Zhang; Jianda Shao

doi:10.1117/12.2525460

21 June 2019 Characterization of thermal absorption and nonlinear absorption in KDP/DKDP crystals with different orientations

Xiaocong Peng, Yuan'an Zhao, Dawei Li, Guohang Hu, Long Zhang, Jianda Shao

Author Affiliations +

Proceedings Volume 11056, Optical Measurement Systems for Industrial Inspection XI; 110563H (2019) https://doi.org/10.1117/12.2525460
Event: SPIE Optical Metrology, 2019, Munich, Germany

Abstract

The optical characteristics of KDP/DKDP crystals, including thermal absorption and nonlinear absorption, were investigated through thermal lens method and Z-scan method. It is found that the thermal absorption in KDP crystal behaves anisotropy at 355nm and 532nm and nonlinear absorption anisotropy in KDP/DKDP crystals is also found at 520nm. For KDP and DKDP samples, the thermal absorption coefficient of crystals with different orientations is slightly different. The four-photon absorption coefficient γ of z-cut KDP sample is larger than that of other orientations. The relationship of nonlinear absorption coefficient γ is z<II<I for KDP sample, while II≈z for DKDP sample.

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Xiaocong Peng, Yuan'an Zhao, Dawei Li, Guohang Hu, Long Zhang, and Jianda Shao "Characterization of thermal absorption and nonlinear absorption in KDP/DKDP crystals with different orientations", Proc. SPIE 11056, Optical Measurement Systems for Industrial Inspection XI, 110563H (21 June 2019); https://doi.org/10.1117/12.2525460

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