Long-term carrier-envelope-phase stabilization of a femtosecond laser by the direct locking method.
We have developed a practical solution to implement the direct locking method for the carrier-envelope phase (CEP) stabilization of femtosecond laser pulses and achieved 24-hour CEP stabilization without realignment of any optical components. The direct locking method realizes the CEP stabilization in the time domain by directly quenching the beat signal from an f-to-2f interferometer and, thereby, locking every pulse to a same CEP. We have accomplished the long-term CEP stabilization using commercially available standard feedback electronics, and maintained the CEP stabilization with low jitter without using any frequency-analyzing components, greatly facilitating the accessibility of the CEP stabilization.
Lee
Jae-hwan
JH
Dept of Physics and Coherent X-ray Research Center, Korea Advanced Institute of Scienceand Technology, Daejeon 305-701, Korea.
Lee
Yong Soo
YS
Park
Juyun
J
Yu
Tae Jun
TJ
Nam
Chang Hee
CH
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D007368:Interferometry / Q000295:instrumentation*; D007834:Lasers; D008029:Lighting / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity