Open AccessOn-line detecting and controlling conception for time-delay measurement in ultrafast laser pulse pump-probe
Author(s) -
He Xue-Peng,
Yuanxing Liu,
Shibing Liu
Publication year - 2011
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.60.024212
Subject(s) - ultrashort pulse , optics , femtosecond , attosecond , interferometry , pulse (music) , interference (communication) , laser , femtosecond pulse shaping , phase (matter) , physics , wavelength , materials science , computer science , telecommunications , detector , channel (broadcasting) , quantum mechanics
A novel optical system for detecting and controlling the time-delay value of probe light in the femtosecond pulse pump-probe measurements is presented based on the simultaneous phase-shifting interferometry scheme. The intensity distributions of interference pattern are calculated based on the Jones theory to optimize the optical system, by which the analytical expressions for phase-shifting length between the neighboring interferograms and the relevant phase-delay value are derived. To meet the requirement of practical application, possible latent errors in the process of detecting time-delay are analyzed. In particular, a minimum time-resolution with attosecond level at 800 nm wavelength was achieved. The results show that this system satisfies the requirement of femtosecond pulse pump-probe high-precision measurement.