Asymmetric Spectral Broadening of 0.3 ps, 1030 nm Laser Pulse in BaWO4 Crystal.

Autor:	Kinyaevskiy, I. O., Kovalev, V. I., Koribut, A. V., Danilov, P. A., Smirnov, N. A., Kudryashov, S. I., Grudtsyn, Ya. V., Dunaeva, E. E., Trofimov, V. A., Ionin, A. A.
Předmět:	LASER pulses STIMULATED Raman scattering RAMAN scattering BRILLOUIN scattering RAMAN lasers CRYSTALS RAMAN effect REFRACTIVE index
Zdroj:	Journal of Russian Laser Research; May2022, Vol. 43 Issue 3, p315-318, 4p
Abstrakt:	Asymmetric spectral broadening combined with an efficient transient stimulated Raman scattering is experimentally demonstrated in a BaWO4 crystal pumped by 0.3 ps 515 nm laser pulse. This effect is explained by a non-instantaneity of the orientational Kerr nonlinearity that is for the first time observed in a solid medium. In this paper, we verify the nature of the asymmetric spectral broadening in a BaWO4 crystal related to the "slow" Kerr nonlinear response. We demonstrate this fact by experiments with 0.3 ps 1030 nm laser pulse, namely, in conditions of no evident effect of stimulated Raman scattering on a self-phase-modulation-induced broadening of the pump pulse spectrum. The nonlinear refractive index and its decay time in the BaWO4 crystal retrieved from 1030 nm wavelength data are in a good agreement with ones obtained for 515 nm wavelength. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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