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Proceedings Paper

Down-converters with doped solid solution crystals GaSe1-xSx for THz spectrometry
Author(s): Z.-M. Huang; J.-G. Huang; Y.-Q. Gao; Q.-J. Yang; Yu. M. Andreev; K. A. Kokh; G. V. Lanskii; A. A. Lisenko; V. A. Svetlichnyi
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Paper Abstract

We launched into a development of a new stand-off sensing system that can detect atmospheric and hazardous gases in real atmosphere utilizing THz technology. Narrow line width, <0.1 cm-1, long-wave (mid-IR and THz) source based on difference frequency generation (DFG) in collinear configuration in GaSe0.91S0.09:Al(0.03 at. %) using seeded YAG laser and KTP OPO as pump sources was designed. The low optical loss coefficient and large hardness, together with the simplicity of the processing, make GaSe0.91S0.09:Al(0.03 at. %) as a high-reliable and effective THz-wave generator suitable for out-of-door application. We demonstrate incoherent terahertz wave detection by stand-off room temperature Schottky diodes located at over 110 m using open waveguide formed by multitude HPE lenses, mirrors and/or unpolished reflectors.

Paper Details

Date Published: 12 May 2017
PDF: 6 pages
Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 101731W (12 May 2017); doi: 10.1117/12.2268341
Show Author Affiliations
Z.-M. Huang, Shanghai Institute of Technical Physics (China)
J.-G. Huang, Shanghai Institute of Technical Physics (China)
Y.-Q. Gao, Shanghai Institute of Technical Physics (China)
Q.-J. Yang, Shanghai Institute of Technical Physics (China)
Yu. M. Andreev, Institute for Monitoring of Climatic and Ecological Systems (Russian Federation)
Tomsk State Univ. (Russian Federation)
Institute of High Current Electronics (Russian Federation)
K. A. Kokh, Tomsk State Univ. (Russian Federation)
Institute of High Current Electronics (Russian Federation)
Sobolev Institute of Geology and Mineralogy (Russian Federation)
G. V. Lanskii, Institute of Monitoring of Climatic and Ecological Systems (Russian Federation)
Tomsk State Univ. (Russian Federation)
Institute of High Current Electronics (Russian Federation)
A. A. Lisenko, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
V. A. Svetlichnyi, Tomsk State Univ. (Russian Federation)
Institute of High Current Electronics (Russian Federation)


Published in SPIE Proceedings Vol. 10173:
Fourth International Symposium on Laser Interaction with Matter
Yongkun Ding; Guobin Feng; Dieter H. H. Hoffmann; Jianlin Cao; Yongfeng Lu, Editor(s)

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