An all fiberized, 1.89-μm Q-switched laser employing carbon nanotube evanescent field interaction

0103 physical sciences 01 natural sciences
DOI: 10.7452/lapl.201210061 Publication Date: 2012-07-01T06:24:33Z
ABSTRACT
An all-fiber-integrated, Q-switched thulium-doped fiber laser based on carbon nanotube (CNT) evanescent field interaction is experimentally demonstrated. It is shown that a saturable absorber based on a CNT-deposited D-shaped fiber can readily be incorporated into a thulium-doped fiber ring cavity for a passive Q-switching operation at a wavelength of ~ 1.89 μm. Using the laser scheme stable Q-switched pulses with a temporal width of ~ 7.155 μs could be obtained at a repetition rate of 14.18 kHz. The temporal stability of the output pulses was also investigated.
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