Title :
Low-noise amplification of high-power pulses in multimode fibers
Author :
Hofer, M. ; Fermann, M.E. ; Galvanauskas, A. ; Harter, D. ; Windeler, R.S.
Author_Institution :
IMRA America Inc., Ann Arbor, MI, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
Low-noise amplification of high-power pulses in multimode erbium/ytterbium-doped fibers is demonstrated. The use of multimode fiber amplifiers allows to overcome the peak power limitations of single-mode amplifiers. As a result femtosecond pulses can be efficiently amplified to peak powers >50 kW in a high-power chirped pulse amplification system using chirped PPLN for frequency-doubling. With an average power level of 1.2 W at the fundamental wavelength of 1.55-μm average powers up to 420 mW are generated at 775 mm.
Keywords :
chirp modulation; erbium; high-speed optical techniques; laser modes; laser noise; laser transitions; optical fibre amplifiers; optical harmonic generation; optical modulation; optical pumping; ytterbium; 1.2 W; 1.55 mum; 420 mW; 50 kW; 755 nm; average power level; average powers; chirped PPLN; erbium-doped fibers; femtosecond pulses; fibre lasers; frequency-doubling; fundamental wavelength; high-power chirped pulse amplification system; high-power pulses; low-noise amplification; multimode fiber amplifiers; multimode fibers; peak power limitations; peak powers; single-mode amplifiers; ytterbium-doped fibers; Chirp; Erbium; High power amplifiers; Optical fiber amplifiers; Optical fiber polarization; Optical fibers; Oscillators; Pulse amplifiers; Samarium; Ultrafast optics;
Journal_Title :
Photonics Technology Letters, IEEE
