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Compact µJ-level all-polarization maintaining femtosecond fiber source

: Schreiber, T.; Ortac, B.; Nielsen, C.K.; Limpert, J.; Tünnermann, A.


Brown, A.J.W. ; Aculight Corp., Bothell/Wash.; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Fiber lasers III: Technology, systems, and applications : 23 - 26 January 2006, San Jose, California, USA; Held at Photonics West
Bellingham/Wash.: SPIE, 2006 (SPIE Proceedings Series 6102)
ISBN: 0-8194-6144-X
Paper 610211
Photonics West Conference <2006, San Jose/Calif.>
Conference Paper
Fraunhofer IOF ()
femtosecond pulse generation; Fiber optic amplifier and laser

We report on a high power, high-energy femtosecond fiber source based on direct amplification of parabolic pulses from an environmental stable passively mode-locked fiber oscillator in an Yb-doped single-polarization photonic crystal fiber. The system delivers a pulse energy of 1.2 ?J (21 W average power) at a repetition rate of 17 MHz and a pulse duration of 240 fs in a linearly polarized beam with diffraction-limited quality. The special pulse shape allows for the generation of high quality femtosecond pulses beyond nonlinearity limits, which is confirmed by numerical simulations.