Title :
Millijoule femtosecond all-fiber system
Author :
Galvanauskas, A. ; Sartania, Z. ; Bischoff, M.
Author_Institution :
IMRA America Inc., Ann Arbor, MI, USA
Abstract :
Summary form only given. We have demonstrated the first all-fiber chirped pulse amplification (CPA) system producing millijoule-range ultrashort-pulses. Peak powers achieved of /spl sim/3 MW in a fiber amplifier are approximately two orders of magnitude higher compared to the previously reported case of mJ energies and > 100 ns long pulses from a Q-switched multimode fiber laser. Note that 400 ps stretching does not constitute a limit and /spl sim/1 ns stretched pulse durations are achievable with standard /spl sim/10 cm wide diffraction gratings. This indicates the straightforward possibility of further energy scaling with this fiber system. Also, the use of 1800 l/mm gratings will allow stretcher and compressor sizes to be significantly reduced. Furthermore, the robust fundamental-mode excitation and propagation properties of 50 /spl mu/m core fiber indicate that further core-size scaling is possible with potential for even higher pulse energies.
Keywords :
chirp modulation; diffraction gratings; optical fibre amplifiers; optical pulse compression; 1 ns; 10 cm; 3 MW; 400 ps; 50 micron; all-fiber chirped pulse amplification; compressor sizes; core-size scaling; diffraction gratings; energy scaling; fiber amplifier; fundamental-mode excitation; millijoule femtosecond all-fiber system; millijoule-range ultrashort-pulses; peak powers; propagation properties; pulse energies; stretcher sizes; Diffraction; Fiber gratings; Fiber lasers; Optical fiber amplifiers; Optical fiber devices; Optical fibers; Optical pulses; Pulse amplifiers; Pulse compression methods; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.947386