Experimental investigation on a Q-switched, mode-locked fiber laser based on the combination of active mode locking and passive Q switching

Title
Experimental investigation on a Q-switched, mode-locked fiber laser based on the combination of active mode locking and passive Q switching
Authors
이준수구준회장유민풀락송용원이주한
Keywords
mode locking; Q switching; CNT
Issue Date
2012-06
Publisher
Journal of the Optical Society of America. B, Optical physics
Citation
VOL 29, NO 6, 1479-1485
Abstract
We performed an experimental investigation on a Q-switched, mode-locked laser based on the combination of passive Q switching and active mode locking. This study was carried out using an erbium fiber ring laser incorporating an active mode locker employing a fast Si-based variable optical attenuator and a passive Q switch based on a carbon nanotube saturable absorber. It was found that stable Q-switched, mode-locked pulses can be readily generated when using a particular cavity modulation index and pump power. It was also found that our scheme can easily alter the operating regime among the Q switching, Q-switched mode locking, and mode locking by simply controlling the cavity modulation index and/or the pump power. For this particular laser configuration, the cavity modulation index and pump power operating conditions have been experimentally analyzed for three laser operating regimes.
URI
http://pubs.kist.re.kr/handle/201004/42599
ISSN
07403224
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