Title :
Low-noise operation modes of a passively mode-locked fiber laser
Author :
Haberl, F. ; Ober, M.H. ; Hofer, M. ; Fermann, M.E. ; Wintner, E. ; Schmidt, A.J.
Author_Institution :
Abteilung Quantenelektronik und Lasertech., Tech. Univ. Vienna, Austria
Abstract :
Optimum low-noise operation modes of a passively mode-locked fiber laser are described and characterized. The laser produces 60 fs bandwidth limited pulses with root mean square amplitude fluctuations of 0.4% in a frequency-band from 30 Hz to 100 kHz. It is shown that low-noise operation up to 5 dB below the amplitude noise of the pump laser is possible with overall negative cavity group-velocity dispersion and a large difference between the intracavity loss under free-running and mode-locked laser operation. Additional frequency stabilization reduces the timing jitter to 4 fs in a frequency band from 1 kHz to 100 kHz and 110 fs in the 30 Hz to 100 kHz band.<>
Keywords :
fibre lasers; fluctuations; laser frequency stability; laser mode locking; noise; optical dispersion; 30 Hz to 100 kHz; 60 fs; amplitude noise; bandwidth limited pulses; free-running; frequency stabilization; intracavity loss; low-noise laser modes; low-noise operation modes; mode-locked laser operation; negative cavity group-velocity dispersion; passively mode-locked fiber laser; pump laser; root mean square amplitude fluctuations; timing jitter; Bandwidth; Fiber lasers; Fluctuations; Frequency; Laser mode locking; Laser noise; Noise level; Optical pulses; Pump lasers; Root mean square;
Journal_Title :
Photonics Technology Letters, IEEE
