Abstract
Employing 0.3 nm diameter single-walled carbon nanotubes (SWCNTs) as
saturable absorbers, we demonstrate a passively mode-locked fiber laser
operating at 1950 nm. The 0.3 nm diameter SWCNTs are prepared by pyrolyzing
dipropylamine in the channels of zeolite crystals MgAPO-11 (AEL). The laser
pumped by a 1550 nm laser source produces 972 fs pulses with a spectral width
at half-maximum of 4.2 nm and a repetition rate of 21.05 MHz, an average
output power of 2.3 mW corresponding to the maximum pump power of 420 mW with
a 10% output coupler.
© 2017 Chinese Laser Press
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