I. O. Kinyaevskiy, V. I. Kovalev, A. V. Koribut, Ya. V. Grudtsyn, L. V. Seleznev, E. E. Dunaeva, A. A. Ionin, “Efficient SRS of chirped Ti : sapphire laser pulses in BaWO<sub>4</sub> crystals”, Kvantovaya Elektronika, 2022, Volume 52, Number 3,Pages <nobr>278

This article is cited in 5 papers

Modern nonlinear optics

Efficient SRS of chirped Ti : sapphire laser pulses in BaWO₄ crystals

I. O. Kinyaevskiy^a, V. I. Kovalev^a, A. V. Koribut^a, Ya. V. Grudtsyn^a, L. V. Seleznev^a, E. E. Dunaeva^b, A. A. Ionin^a

^a Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
^b Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: We report an experimental study of SRS of chirped 40-ps Ti : sapphire laser pulses with a transform-limited duration of 0.35 ps and centre wavelength of 925 nm in BaWO₄ crystals. The highest generation efficiency for the ~925 cm^–1 shifted Stokes signal of SRS by the υ₁ vibrational mode of BaWO4 crystals has been reached using three sequentially located crystals with a total length of 3.3 cm. The position of the crystals after a focusing mirror has been optimised, which has ensured a pump-to-Stokes conversion efficiency of ~50% in terms of spectral brightness and ~20% in terms of pulse energy.

Keywords: stimulated Raman scattering, BaWO₄ crystal, Ti : sapphire laser, femtosecond pulse.

Received: 15.11.2021
Revised: 27.12.2021
Accepted: 27.12.2021