Aspects for efficient wide spectral band THz generation via CO2 laser down conversion

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Panchenko, Yu. N. | 2015

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DOI Доступ к ресурсу на сайте издателя			10.1117/12.2065345

Title: Aspects for efficient wide spectral band THz generation via CO2 laser down conversion
Creator: Panchenko, Yu. N.
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Lanskii, Grigory V.
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Losev, V. F.
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Lubenko, D. M.
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Andreev, Yury M.
Date: 2015
DOI: 10.1117/12.2065345
Description: Detailed model study of THz generation by CO2 laser down-conversion in pure and solid solution crystals GaSe1-xSx is carried out for the first time. Both forward and backward collinear interactions of common (eo-e, oe-e, oe-o, oo-e, ee-o) and original (ee-e, oo-o) types are considered. Possibility of realization, phase matching angles and figure of merits are estimated for line mixing within 9 μm and 10 μm emission bands, as well between them. Dispersion properties of o- and e-wave refractive indices and absorption coefficients for GaSe, GaS and GaSe1-xSx crystals were preliminary measured by THz-TDS, approximated in the equation form and then used in the study. Estimated results are presented in the form of 3-D figures that are suitable for rapid analyses of DFG parameters. The most efficient type of interaction is eo-o type. Optimally doped (x = 0.09-0.13) GaSe1-xSx crystals are from 4 to 5 times more efficient at limit pump intensity than not doped GaSe crystals.

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collection(s): Сибирский физико-технический институт
Identifier: смотреть в электронном каталоге НБ ТГУ
Type: статьи в журналах
Source: Proceedings of SPIE. 2015. Vol. 9255 : XX International Symposium on High-Power Laser Systems and Applications, 2014. P. 92554P-1-92554P-9
Language: eng

Created: 23-06-2017

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Сибирский физико-технический институт Aspects for efficient wide spectral band THz generation via CO2 laser down conversion