Open AccessControl of carrier-envelope phase offset in femtosecond laser with PLL and TV-Rb clock
Author(s) -
Hainian Han,
Wei Zhang,
Juanjuan Tong,
Yanhui Wang,
Peng Wang,
Zhiyi Wei,
Dehua Li,
Shen Nai_Chen,
Yonggang Nie,
Dong Tai-Qian
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.291
Subject(s) - phase locked loop , femtosecond , laser , optics , materials science , phase noise , frequency comb , beat (acoustics) , frequency offset , frequency synthesizer , clock signal , frequency multiplier , optoelectronics , physics , telecommunications , jitter , computer science , channel (broadcasting) , cmos , orthogonal frequency division multiplexing
With the fast development of the cycle-pulse lasers, the control of the carrier-envelope phase offset (CEO) frequency has been an important research subject in such fields as femtosecond optical frequency metrology, strong field physics and high harmonic generation. In this paper, a different measurement method for CEO is demonstrated and subsequently a better beat frequency signal with the signal-to-noise ratio greater than 40 dB is obtained. Based on this optimized beat frequency signal, the CEO of the Ti:sapphire laser is stabilized to the standard signal of 10 MHz of the microwave reference source TV-Rb clock by using the electronic phase-locked loop techniques and the piezo-transducers which are mounted on the mirror inside the laser cavity to change the frequency and phase. The repetition rate of the Ti:sapphire laser is locked to the same TV-Rb clock simultaneously. The experimental results showed that the stability of the repetition rate reached the same level as the TV-Rb clock and that of the CEO frequency was increased by three orders.