High-power femtosecond Raman frequency shifter

We report on the generation of broadband, high-energy femtosecond pulses centered at 1.28 mu m 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 10Hz. The demonstrated high-energy frequency shifter will benefit intense THz sources based on highly nonlinear organic crystals. (C) 2016 Optical Society of America


Published in:
Optics Letters, 41, 20, 4719-4722
Year:
2016
Publisher:
Washington, Optical Soc Amer
ISSN:
0146-9592
Laboratories:




 Record created 2017-01-24, last modified 2018-09-13


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