Modification and ab-initio spectroscopic application of modified commerce terahertz spectrometer by using homemade parts

D. M. Lubenko; V. F. Losev; Yu. M. Andreev; K. A. Kokh; G. V. Lanskii; V. A. Svetlichnyi

doi:10.1117/12.2224941

15 December 2015 Modification and ab-initio spectroscopic application of modified commerce terahertz spectrometer by using homemade parts

D. M. Lubenko, V. F. Losev, Yu. M. Andreev, K. A. Kokh, G. V. Lanskii, V. A. Svetlichnyi

Author Affiliations +

Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 981012 (2015) https://doi.org/10.1117/12.2224941
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation

Abstract

Ab-initio study on modification of commerce terahertz spectrometer with time resolution Z-3 (Zomega, USA) by substitution of ZnTe and GaP detectors and LT-GaAs generator for homemade of pure and S-doped GaSe is carried out. It was established that in spite of not optimized parameters pure and doped GaSe:S(0.3 mass%) crystal are comparable, relatively, in generation efficiency and detection sensitivity to commerce units due to lower nonlinear optical loss and much higher damage threshold. The advantages are in force from pump fluences of below 5 mJ/cm² for pure GaSe. The closer S-doping to optimal concentration, the lover fluences resulting in the advantages. Pure and S-doped GaSe demonstrate higher reliability and larger dynamic range of operation. Recorded absorption spectra well match known spectra.

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D. M. Lubenko, V. F. Losev, Yu. M. Andreev, K. A. Kokh, G. V. Lanskii, and V. A. Svetlichnyi "Modification and ab-initio spectroscopic application of modified commerce terahertz spectrometer by using homemade parts", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 981012 (15 December 2015); https://doi.org/10.1117/12.2224941

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KEYWORDS

Gases

Crystals

Terahertz radiation

Absorption

Sensors

Spectroscopy

Gallium

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