Abstract
Raman conversion with a single Ba(NO3)2 crystal (barium nitrate) either in single- and double-pass travelling-wave setups has been investigated. A Master-Oscillator-Power-Amplifier (MOPA) system, based on a passively Q-switched (PQS) laser generating 500-ps pulses and delivering a total energy of 350 μJ at 1 kHz, was used as pump source for the Raman generator. The two-passes setup yielded 116-μJ, 150-ps Fourier- and diffraction-limited pulses at 1198 nm for ≈3× the Raman threshold with no additional Stokes lines, and conversion efficiency of 35%. Such results are interesting not only for direct applications of the wavelength-shifted laser source, but also for further pulse-compression and supercontinuum generation in fibers. Indeed, self-phase modulation up to 0.82 nm has been demonstrated (pulse compression down to 5 ps) as well as 120-nm supercontinuum.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.