Abstract

We report on the generation of broadband, high-energy femtosecond pulses centered at 1.28 μm by stimulated Raman scattering in a pressurized hydrogen cell. Stimulated Raman scattering is performed by two chirped and delayed pulses originating from a multi-mJ Ti:sapphire amplifier. The Stokes pulse carries record-high energy of 4.4 mJ and is recompressed down to 66 fs by a reflective grating pair. We characterized the short-wavelength mid-infrared source in view of energy stability, beam profile, and conversion efficiency at repetition rates of 100 and 10 Hz. The demonstrated high-energy frequency shifter will benefit intense THz sources based on highly nonlinear organic crystals.

© 2016 Optical Society of America

Femtosecond Raman frequency shifter–pulse compressor

A. V. Konyashchenko, L. L. Losev, and V. S. Pazyuk
Opt. Lett. 44(7) 1646-1649 (2019)

High-energy conversion efficiency of transient stimulated Raman scattering in methane pumped by the fundamental of a femtosecond Ti:sapphire laser

I. G. Koprinkov, Akira Suda, Pengqian Wang, and Katsumi Midorikawa
Opt. Lett. 24(18) 1308-1310 (1999)

25.5  fs dissipative soliton diamond Raman laser

Jipeng Lin and David J. Spence
Opt. Lett. 41(8) 1861-1864 (2016)

High-power synchronously pumped femtosecond Raman fiber laser

D. Churin, J. Olson, R. A. Norwood, N. Peyghambarian, and K. Kieu
Opt. Lett. 40(11) 2529-2532 (2015)

Spectral–temporal dynamics of high power Raman picosecond pulse using H₂-filled Kagome HC-PCF

Aurélien Benoît, Ekaterina Ilinova, Benoit Beaudou, Benoît Debord, Frédéric Gérôme, and Fetah Benabid
Opt. Lett. 42(19) 3896-3899 (2017)