Title :
Generation of 25-fs High Energy Pulses by SPM-Induced Spectral Broadening in a Photonic Crystal Fiber Laser System
Author :
Xie, Chen ; Hu, Ming-Lie ; Zhang, Da-Peng ; Gu, Cheng-Lin ; Song, You-Jian ; Chai, Lu ; Wang, Ching-Yue
Author_Institution :
Key Lab. of Opto- Electron. Inf. Technol. (Minist. of Educ.), Tianjin Univ., Tianjin, China
fDate :
4/1/2012 12:00:00 AM
Abstract :
We demonstrate 25-fs laser pulse generation from a photonic crystal fiber (PCF) laser system, which consists of a high energy all normal dispersion mode-locked oscillator based on an ytterbium-doped large mode area PCF and a passive PCF-based grating-pair compressor. The oscillator directly delivers 314-nJ highly-chirped pulses with a duration of 1.32 ps at a repetition rate of 15.58 MHz, which can be dechirped to 75 fs, corresponding to a peak power of 3 MW. The output laser pulses from the oscillator are directly injected to a piece of passive PCF for spectral broadening and dechirped by a transmission grating pair compressor, which results in a short pulse duration of 25 fs with 1-W average power.
Keywords :
diffraction gratings; holey fibres; optical fibre dispersion; optical pulse compression; optical pulse generation; photonic crystals; spectral line broadening; ytterbium; SPM-induced spectral broadening; energy 314 nJ; grating-pair compressor; high energy pulse generation; highly-chirped pulses; laser pulse generation; normal dispersion mode-locked oscillator; passive PCF; photonic crystal fiber laser system; time 1.32 fs; time 25 fs; transmission grating pair compressor; ytterbium-doped large mode area PCF; Dispersion; Fiber lasers; Laser mode locking; Optimized production technology; Oscillators; Photonic crystal fibers; Power lasers; Femtosecond pulse; laser mode-locking; photonic crystal fiber (PCF); pulse compression;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2183343
