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. 2020 Dec 15;45(24):6627-6630.
doi: 10.1364/OL.408478.

Two-stage transient stimulated Raman chirped-pulse amplification in KGd(WO4)2 with compression to 145 fs

Paulius Mackonis, Augustinas Petrulenas, Aleksej M Rodin, Vytenis Girdauskas, Andrejus Michailovas

Two-stage transient stimulated Raman chirped-pulse amplification in KGd(WO4)2 with compression to 145 fs

Paulius Mackonis et al. Opt Lett. .

Abstract

We report efficient amplification of chirped supercontinuum pulses in a two-stage stimulated Raman amplifier based on double tungstate [KGd(WO4)2] crystals, pumped with 1.2 ps transform-limited pulses at a 1030 nm wavelength. The second stage demonstrates a conversion efficiency of 55% with an output pulse energy of 0.6 mJ at a 1135 nm wavelength. The amplified Stokes bandwidth is 10 times the pump bandwidth, providing 145 fs pulses after compression.

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