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Proceedings Paper

Numerical modeling of difference frequency radiation generation by a few optical cycles duration pulse propagating in a quasi-phase-matching GaAs crystal
Author(s): D. L. Hovhannisyan; A. A Hakhoumian; E. M Laziev; A. S Nikoghosyan; G. D Hovhannisyan
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Paper Abstract

We present the results of numerical study of the generation process of difference frequency radiation (DFR) arising via interaction of mutually orthogonal linearly- polarized a few-cycle laser pulses propagating in a quasiphase- matching (QPM) GaAs crystal. Considered the interaction of pulses having the central wavelengths of 1.98 μm, duration of 30 fs with the electric field amplitude 200 MV/m, propagating along the normal to the <110> plane. The period © of QPM GaAs crystal in numerical simulations varied from 20.89 μm to 53.23 μm. It is shown that by changing the grating period of QPM GaAs crystal from 23.02 μm to 37.29 μm it's possible to improve efficiency of QPM generation of DFR in 5.48 μm ÷ 10.12 μm spectral range at least by 8 dB in comparison with the generation of DFR in bulk crystal GaAs in the same spectral range.

Paper Details

Date Published: 4 March 2011
PDF: 10 pages
Proc. SPIE 7998, International Conference on Laser Physics 2010, 79980Q (4 March 2011); doi: 10.1117/12.890512
Show Author Affiliations
D. L. Hovhannisyan, Yerevan State Univ. (Armenia)
A. A Hakhoumian, Institute of Radiophysics & Electronics (Armenia)
E. M Laziev, Yerevan State Univ. (Armenia)
A. S Nikoghosyan, Yerevan State Univ. (Armenia)
G. D Hovhannisyan, Yerevan State Univ. (Armenia)

Published in SPIE Proceedings Vol. 7998:
International Conference on Laser Physics 2010
Aram V. Papoyan, Editor(s)

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