Dual-wavelength synchronously mode-locked Nd:CNGG laser.
We have experimentally demonstrated a dual-wavelength synchronously mode-locked Nd:CNGG laser based on the semiconductor saturable absorber mirror technique. Mode locking was achieved simultaneously on two gain bands of the crystal that have a central wavelength separation of 2.4 nm. The fundamental mode-locked pulse train has a repetition rate of 88 MHz and pulse duration of 5 ps, with an average output power of approximately 90 mW. Autocorrelation measurements show that each of the synchronously mode-locked pulses consists of a train of quasi-periodic beat pulses with a 660 fs pulse width and a 0.63 THz repetition rate.
Xie
G Q
GQ
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. gqxie@ntu.edu.sg
Tang
D Y
DY
Luo
H
H
Zhang
H J
HJ
Yu
H H
HH
Wang
J Y
JY
Tao
X T
XT
Jiang
M H
MH
Qian
L J
LJ