Influence of ZnGeP2 volumetric defects on the spectral characteristics in THz range

Mikhail M. Zinovev; Nikolay N. Yudin; Yelena V. Zhuravlyova; Sergey N. Podzyvalov

doi:10.1117/12.2582490

17 November 2020 Influence of ZnGeP₂ volumetric defects on the spectral characteristics in THz range

Mikhail M. Zinovev, Nikolay N. Yudin, Yelena V. Zhuravlyova, Sergey N. Podzyvalov

Proceedings Volume 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications; 115821M (2020) https://doi.org/10.1117/12.2582490
Event: Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 2020, Tomsk, Russian Federation

Abstract

Volumetric defects in ZnGeP₂ single crystal have been visualized by using the digital holography camera. Type, geometrical sizes and positioning of founded defects were determined. Based on this information researching zones were chosen on the test ZnGeP2 plate. Measurements of absorption coefficient and refractive index in THz range were carried out. It is shown that in the frequency range 0,3-1 THz the difference of absorption coefficients reaches the value Δα = 0.2 cm-1 between “clear” zones and zones with volumetric defects. In same time, maximum difference by refractive index is about Δnmax = 0,0015.

Citation Download Citation

Mikhail M. Zinovev, Nikolay N. Yudin, Yelena V. Zhuravlyova, and Sergey N. Podzyvalov "Influence of ZnGeP₂ volumetric defects on the spectral characteristics in THz range", Proc. SPIE 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 115821M (17 November 2020); https://doi.org/10.1117/12.2582490

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