Abstract

We experimentally demonstrate flexible control of the pulse repetition rate in a passively Q-switched fiber lasers using a carbon nanotube-embedded fiber-optic tunable coupler as a passive Q-switch. It is shown that the pulse repetition rate can readily be tuned from 13 to 21 kHz by mechanically adjusting the cross-coupling ratio of the coupler.

© 2015 Optical Society of America

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