Title :
High-power side-pumped passively mode-locked Er-Yb fiber laser
Author :
Hofer, M. ; Fermann, M.E. ; Goldberg, L.
Author_Institution :
IMRA America, Ann Arbor, MI, USA
Abstract :
A side-pumped double-clad Er-Yb fiber laser passively mode-locked with a saturable absorber is demonstrated for the first time. Pumped with a power of 1 W from a broad-stripe diode laser, an environmentally stable cavity design produces positively chirped 3-ps pulses at a repetition rate of 30 MHz with an average output power of 50 mW. The pulses can be linearly compressed to 330 fs in a length of negative dispersion fiber, whereas nonlinear compression in standard telecom fibers yields 130-fs pulses with pulse energies of 1.2 nJ.
Keywords :
chirp modulation; erbium; fibre lasers; laser cavity resonators; laser mode locking; laser stability; optical fibre cladding; optical modulation; optical pulse compression; optical pumping; optical saturable absorption; ytterbium; 1 W; 1.2 nJ; 130 fs; 3 ps; 330 fs; 50 mW; average output power; broad-stripe diode laser; environmentally stable cavity design; high-power side-pumped passively mode-locked Er-Yb fiber laser; linearly compressed; negative dispersion fiber; nonlinear compression; optical pulse compression; positively chirped ps pulses; pulse energies; repetition rate; saturable absorber; side-pumped double-clad Er-Yb fiber laser; standard telecom fibers; Chirp; Diode lasers; Fiber lasers; Laser excitation; Laser mode locking; Optical design; Optical pulses; Power generation; Pulse compression methods; Pump lasers;
Journal_Title :
Photonics Technology Letters, IEEE
