Radiation of difference frequencies at optical rectification of spatially limited femtosecond laser pulse in the periodically poled GaAs crystal

A. S. Martirosyan; D. L. Hovhannisyan; V. O. Chaltikyan; G. D. Hovhannisyan

doi:10.1117/12.852578

14 May 2010 Radiation of difference frequencies at optical rectification of spatially limited femtosecond laser pulse in the periodically poled GaAs crystal

A. S. Martirosyan, D. L. Hovhannisyan, V. O. Chaltikyan, G. D. Hovhannisyan

Author Affiliations +

Proceedings Volume 7717, Optical Modelling and Design; 77170R (2010) https://doi.org/10.1117/12.852578
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

The influence of spatial limitation femtosecond laser pulse as both on generation efficiency of difference frequency radiation by an optical rectification in periodically-poled GaAs crystal, and on a space-time profile of generated radiation in near and far zones is investigated. The difference frequency radiation features generated by spatially-limited femtosecond laser pulse with Gaussian spatial profile of intensity and the amplitude front in periodically-poled GaAs crystal are considered. As a result of Fresnel transformation application, an expression for the frequency-angular spectrum and the spectral density of difference frequency radiation in the far field is obtained. It is shown that generating the difference frequency radiation via optical rectification of spatially-limited femtosecond laser pulse in cross-section distribution of difference frequency radiation near field a certain coordinate corresponds to the appropriate spectral component.

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A. S. Martirosyan, D. L. Hovhannisyan, V. O. Chaltikyan, and G. D. Hovhannisyan "Radiation of difference frequencies at optical rectification of spatially limited femtosecond laser pulse in the periodically poled GaAs crystal", Proc. SPIE 7717, Optical Modelling and Design, 77170R (14 May 2010); https://doi.org/10.1117/12.852578

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