Abstract

$17.2\mathrm{GHz}$, the highest fundamental-mode repetition rate to our knowledge, of a carbon nanotube-based passively mode-locked laser is realized at $1570\mathrm{nm}$ by employing purified single-walled carbon nanotubes as saturable absorbers. The ultrashort linear laser cavity configured with a $\sim 9\mathrm{mm}$ length is designed and demonstrated with our extremely miniaturized nanotube mode locker and a mirror-coated semiconductor optical amplifier as gain medium. The demonstrated pulsed laser has the inferred temporal pulse width of $14\mathrm{ps}$ and a $3\mathrm{dB}$ spectral bandwidth of $0.73\mathrm{nm}$.

© 2007 Optical Society of America

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