All-fiber passively Q-switched 604  nm praseodymium laser with a Bi2Se3saturable absorber.
We experimentally demonstrated a simple passively Q-switched praseodymium (Pr3+)-doped all-fiber laser at 604 nm with a Bi2Se3saturable absorber (SA). A Bi2Se3/polyvinyl alcohol composite film is sandwiched between two ferrules to construct a fiber-compatible Q-switcher. Two fiber end facet mirrors build a compact-linear resonator. The repetition rate of the achieved 604 nm Q-switching pulse can be widely tuned from 86.2 to 187.4 kHz, and the pulse duration can be as narrow as 494 ns. To the best of our knowledge, this is the shortest operation wavelength of a Bi2Se3-based pulsed all-fiber laser at 604 nm.
Hui-Yu
HY
Lin
Wen-Song
WS
Li
Jing-Long
JL
Lan
Xiao-Feng
XF
Guan
Hui-Ying
HY
Xu
Zhi-Ping
ZP
Cai