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

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 ν1 vibrational mode of BaWO4 crys...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2022-03, Vol.52 (3), p.278-282
Main Authors: Kinyaevskiy, I.O., Kovalev, V.I., Koribut, A.V., Grudtsyn, Ya.V., Seleznev, L.V., Dunaeva, E.E., Ionin, A.A.
Format: Article
Language:English
Subjects:
BaWO
crystal
Crystals
femtosecond pulse
Sapphire
stimulated Raman scattering
Ti:sapphire laser
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Summary: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 ν1 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.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL18002