A passively Q-switched thulium-doped fiber laser with single-walled carbon nanotubes
- Ma, H. F.
- Wang, Y. G.
- Zhou, W.
- Long, J. Y.
- Shen, D. Y.
- Wang, Y. S.
DOIAbstract
We demonstrate a passively Q-switched thulium-doped fiber laser by using single-walled carbon nanotube (SWCNT) polyvinyl alcohol (PVA) composite film as the saturable absorber (SA). A relatively large mode area on the SA was employed to avoid damage of the SWCNT/PVA film and benefit pulsed laser operation. Stable pulses of 85-164 kHz repetition rate were generated at 1967 nm with a maximum average output power of 103 mW. The single pulse energy was up to similar to 0.63 mu J with similar to 0.87 mu s pulse duration
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