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Proceedings Paper

Spectral modifications of femtosecond laser pulses induced by high-efficiency optical rectification
Author(s): Andrey G. Stepanov; Sergey V. Chekalin
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Paper Abstract

We report experimental observations of the spectral modifications of ultrashort laser pulses caused by the generation of terahertz (THz) radiation via phase-matched optical rectification in LiNbO3. The measured red shift and narrowing of the laser pulse spectra is in a good agreement with the consideration of the THz generation processes in terms of difference frequency mixing. Moreover, we propose and demonstrate a new method for evaluating the absolute energy of the THz pulse generated via high-efficiency optical rectification. The method is based on analyzing the laser pulse spectral modifications. Abilities to obtain >100% optical-to-THz quantum conversion efficiency are discussed.

Paper Details

Date Published: 27 July 2007
PDF: 6 pages
Proc. SPIE 6729, ICONO 2007: Coherent and Nonlinear Optical Phenomena, 672909 (27 July 2007); doi: 10.1117/12.751848
Show Author Affiliations
Andrey G. Stepanov, Institute of Spectroscopy (Russia)
Sergey V. Chekalin, Institute of Spectroscopy (Russia)


Published in SPIE Proceedings Vol. 6729:
ICONO 2007: Coherent and Nonlinear Optical Phenomena

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