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

Yu N. Panchenko, Yu M. Andreev, G. V. Lanskii, V. F. Losev, D. M. Lubenko

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

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.

Язык оригиналаАнглийский
Название основной публикацииXX International Symposium on High-Power Laser Systems and Applications 2014
ИздательSPIE
Том9255
ISBN (электронное издание)9781628413229
DOI
СостояниеОпубликовано - 2015
Событие20th International Symposium on High Power Systems and Applications 2014, HPLS and A 2014 - Chengdu, Китай
Продолжительность: 25 авг 201429 авг 2014

Конференция

Конференция20th International Symposium on High Power Systems and Applications 2014, HPLS and A 2014
СтранаКитай
ГородChengdu
Период25.8.1429.8.14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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