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

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

Bibliographic Details
Parent link:Proceedings of SPIE
Vol. 9255 : XX International Symposium on High-Power Laser Systems and Applications 2014, Chengdu, China, August 25, 2014.— 2015.— [92554P, 9 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра сильноточной электроники (СЭ)
Other Authors: Panchenko Yu. N. Yury Nikolaevich, Andreev Yu. M. Yury Mikhaylovich, Lansky G. V. Grigory Vladimirovich, Losev V. F. Valery Fedorovich, Lubenko D. M. Dmitry Mikhaylovich
Summary:Title screen
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 ?m and 10 ?m 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.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2015
Subjects:
электронный ресурс
труды учёных ТПУ
Online Access:http://dx.doi.org/10.1117/12.2065345
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644831

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