Polarization control of multi-photon absorption under intermediate femtosecond laser field

Cheng Wenjing^{1, ‡}, Liu Pei², Liang Guo¹, Wu Ping¹, Jia Tianqing², Sun Zhenrong², Zhang Shian^{2, §}

(color online) The normalized two-photon (blue dashed line) and four-photon transition probability (red dotted line) by varying the quarter-wave plate angle with the laser center frequency of 12500 cm and the laser intensity of 1 × 10 W/cm .