Yb-doped passively mode-locked fiber laser with Bi
2
Te
3
-deposited
*
Li Lu
a),
c),
d)
, Yan Pei-Guang
b)
, Wang Yong-Gang†
a)
, Duan Li-Na
a),
d)
, Sun Hang
a)
, Si Jin-Hai
c)
SEM images of (a) tapered fiber and (b) morphology of deposited Bi
2
Te
3
.