Nonlinear compression in a rod-type fiber for high energy ultrashort pulse generation.
We report the use of nonlinear compression in a very large mode-area rod-type photonic crystal fiber. This fiber allows the use of high energy pulses in the few microjoule range. We demonstrate the compression of 4 microJ, 338 fs pulses from a fiber chirped pulse amplification (FCPA) system down to 49 fs, 41 MW peak power pulses at a repetition rate of 200 kHz with an average power of 400 mW. The nonlinear compression setup is composed of a 5-cm-long rod-type fiber and a pair of SF10 prisms. The system was optimized to obtain good temporal quality, with a temporal Strehl ration of 86 % for the compressed 49 fs pulses.
Martial
Igor
I
Institut d'Optique, CNRS, Université Paris-Sud, Palaiseau, France. igor.martial@institutoptique.fr
Papadopulos
Dimitris
D
Hanna
Marc
M
Druon
Frédéric
F
Georges
Patrick
P
D000669:Amplifiers, Electronic; D004867:Equipment Design; D005336:Fiber Optic Technology; D007834:Lasers; D055100:Optical Fibers; D055095:Optics and Photonics; D009991:Oscillometry / Q000379:methods; D012815:Signal Processing, Computer-Assisted