Temperature feedback control for long-term carrier-envelope phase locking.
We report a double feedback loop for the improvement of the carrier-envelope phase stabilization of a chirped mirror based femtosecond laser oscillator. By combining the control of the Ti:sapphire crystal temperature and the modulation of the pump power, the carrier envelope offset frequency, fCEO, was locked for close to 20 h, which is much longer than the typical phase stabilization time with only pump power modulation.
Yun
Chenxia
C
J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA.
Chen
Shouyuan
S
Wang
He
H
Chini
Michael
M
Chang
Zenghu
Z