论文信息 - Generation of high-energy femtosecond pulses in multimode-core Yb-fiber chirped-pulse amplification systems.

Generation of high-energy femtosecond pulses in multimode-core Yb-fiber chirped-pulse amplification systems.

220-fs pulses with energies of ~100microJ have been generated by use of two different configurations of diode-pumped Yb-fiber chirped-pulse amplification systems. Energy scaling was demonstrated with 25-microm -core diameter fibers, in which stable diffraction-limited output (M(2)~1.1) was achieved. A two-stage fiber-amplifier system produced average powers of up to 5.5 W at ~1- MHz pulse-repetition rate. A double-pass configuration provided 53-dB gain in a single Yb-fiber amplifier stage, thus eliminating the necessity for multiple amplification stages as well as the need for using polarization-preserving fibers.

[1] M M Fejer,et al. Chirped-pulse-amplification circuits for fiber amplifiers, based on chirped-period quasi-phase-matching gratings. , 1998, Optics letters.

[2] A. Galvanauskas,et al. Hybrid diode-laser fiber-amplifier source of high-energy ultrashort pulses. , 1994, Optics letters.

[3] M. Fermann,et al. Single-mode excitation of multimode fibers with ultrashort pulses. , 1998, Optics letters.

[4] Ian Bennion,et al. All‐fiber femtosecond pulse amplification circuit using chirped Bragg gratings , 1995 .

[5] G Fibich,et al. Critical power for self-focusing in bulk media and in hollow waveguides. , 2000, Optics letters.

[6] John D. Love,et al. Quantifying loss minimisation in single-mode fibre tapers , 1986 .

[7] David N. Payne,et al. Mode excitation in a multimode optical-fibre waveguide , 1973 .

[8] K. Wong,et al. Ultrawide tunable Er soliton fiber laser amplified in Yb-doped fiber. , 1999, Optics letters.