Quantum coherent control of two-photon transitions by square phase-modulation  

作　　者：张诗按 王祖赓 孙真荣 

机构地区：[1]State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University

出　　处：《Chinese Physics B》2008年第8期2914-2918,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No 10574046);National Key Project for Basic Research of China (Grant Nos 2006CB806006 and 2006CB921105);Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT), Program for New Century Excellent Talents in University (NCET-04-0420);the Doctoral Program of High Education (Grant No 20050269011);Phosphor Program sponsored by Shanghai Science and Technology Committee (Grant No 06QH14003)

摘　　要：A femtosecond laser pulse can be tailored to control the two-photon transitions using the ultra-fast pulse-shaping technique. This paper theoretically and experimentally demonstrates that two-photon transitions in molecular system with broad absorption line can be effectively controlled by square phase-modulation in frequency domain, and the influence of all parameters characterizing the square phase-modulation on two-photon transitions is systemically investigated and discussed. The obtained results have potential application in nonlinear spectroscopy and molecular physics.A femtosecond laser pulse can be tailored to control the two-photon transitions using the ultra-fast pulse-shaping technique. This paper theoretically and experimentally demonstrates that two-photon transitions in molecular system with broad absorption line can be effectively controlled by square phase-modulation in frequency domain, and the influence of all parameters characterizing the square phase-modulation on two-photon transitions is systemically investigated and discussed. The obtained results have potential application in nonlinear spectroscopy and molecular physics.

关 键 词：two-photon transitions coherent control pulse shaping 

分 类 号：O431.2[机械工程—光学工程] O561[理学—光学]