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21 February 2011 Modified Sellmeier equations for ZnGeP2 in the 0.97-1640μm range
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Abstract
This paper reports the modified Sellmeier equations for ZnGeP2 (ZGP) that provide excellent reproduction of the phase-matching conditions for DFG between the two CO2 laser wavelengths, and the Nd:YAG laser and the Nd:YAG laser-pumped OPO in the THz region. Model calculations based on these Sellmeier equations strongly indicate that there is no significant difference in the refractive indices of the non-annealed and annealed crystals from 1.0642μm to 1640μm (0.18THz).
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K. Kato, N. Umemura, T. Okamoto, and T. Mikami "Modified Sellmeier equations for ZnGeP2 in the 0.97-1640μm range", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 79171V (21 February 2011); https://doi.org/10.1117/12.873133
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