Title :
Tunable Raman Soliton Source Using Mode-Locked Tm–Ho Fiber Laser
Author :
Kivistö, Samuli ; Hakulinen, Tommi ; Guina, Mircea ; Okhotnikov, Oleg G.
Author_Institution :
Optoelectronics Res. Centre, Tampere Univ. of Technol.
fDate :
6/15/2007 12:00:00 AM
Abstract :
We report a femtosecond pulse source that uses a mode-locked Tm-Ho oscillator and a self-frequency shift of Raman solitons in Tm-Ho power amplifier. The master oscillator mode-locked by an antimonide-based saturable absorber mirror produces 750-fs transform-limited soliton pulses over the tuning range from 1912 to 1972 nm. The soliton self-frequency shift in the amplifier resulted in transform-limited pulses with the wavelength adjusted by varying the amplifier pump power. We obtain ~150-fs soliton pulses at the wavelength of 2150 nm with average power up to 230 mW corresponding to the peak power of 27 kW. The efficiency of Raman conversion ranges from 47% to 62% over the tuning range
Keywords :
Raman spectra; holmium; laser cavity resonators; laser mirrors; laser mode locking; laser tuning; optical fibre amplifiers; optical pulse generation; optical pumping; optical saturable absorption; optical solitons; thulium; 150 fs; 1912 to 1972 nm; 2150 nm; 27 W; 750 fs; Raman conversion efficiency; Raman solitons; Tm-Ho fiber laser; Tm-Ho oscillator; Tm-Ho power amplifier; amplifier pump power; antimonide-based saturable absorber mirror; femtosecond pulse source; femtosecond soliton pulses; laser tuning; master oscillator; mode-locked laser; self-frequency shift; soliton pulses; transform-limited soliton pulses; tunable soliton source; Fiber lasers; Laser mode locking; Laser tuning; Mirrors; Oscillators; Power amplifiers; Pulse amplifiers; Solitons; Stimulated emission; Tunable circuits and devices; Lasers and laser optics; optical fibers; short pulse formation; solitons;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.898877
