Highly efficient transient stimulated Raman scattering on secondary vibrational mode of BaWO4 crystal due to its constructive interference with self-phase modulation

Igor Kinyaevskiy; Valeri Kovalev; Pavel Danilov; Nikita Smirnov; Sergey Kudryashov; Andrey Koribut; Andrey Ionin

doi:10.3788/COL202321.031902

Journals >Chinese Optics Letters >Volume 21 >Issue 3 >Page 031902 > Article

Chinese Optics Letters
Vol. 21, Issue 3, 031902 (2023)

Highly efficient transient stimulated Raman scattering on secondary vibrational mode of BaWO₄ crystal due to its constructive interference with self-phase modulation

Igor Kinyaevskiy, Valeri Kovalev^*, Pavel Danilov, Nikita Smirnov, Sergey Kudryashov, Andrey Koribut, and Andrey Ionin

Author Affiliations

P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russia

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DOI: 10.3788/COL202321.031902 Cite this Article Set citation alerts

Igor Kinyaevskiy, Valeri Kovalev, Pavel Danilov, Nikita Smirnov, Sergey Kudryashov, Andrey Koribut, Andrey Ionin. Highly efficient transient stimulated Raman scattering on secondary vibrational mode of BaWO₄ crystal due to its constructive interference with self-phase modulation[J]. Chinese Optics Letters, 2023, 21(3): 031902 Copy Citation Text

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Abstract

An exceptionally high stimulated Raman scattering (SRS) conversion efficiency to the first Stokes component associated with the secondary (low-frequency and low intensity) vibrational mode

ν_{2}

(

\sim 330 {cm}^{- 1}

) was observed in a

{BaWO}_{4}

crystal in a highly transient regime of interaction. The effect takes place in the range of pump pulse energy from

\sim 0.1

\sim 0.5 µJ

with maximum energy conversion efficiency up to 35% at 0.2 µJ. The nature of the observed effects is explained by interference of SRS and self-phase modulation, where the latter is related to a noninstantaneous orientational Kerr nonlinearity in the