Broadband Asymmetric Conical Emission via Cascaded Second-Order Nonlinear Polarization during the Propagation of Femtosecond Laser Pulses in a BBO Crystal  

作　　者：WEN Jing JIANG Hong-Bing YU Jing YANG Hong GONG Qi-Huang 温静;蒋红兵;余婧;杨宏;龚旗煌(Department of Physics&State Key Laboratory for Mesoscopic Physics,Peking University,Beijing,100871)

机构地区：[1]Department of Physics&State Key Laboratory for Mesoscopic Physics,Peking University,Beijing,100871

出　　处：《Chinese Physics Letters》2011年第6期137-140,共4页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China under Grant Nos 11074014,10634020 and 10821062.

摘　　要：We investigate the propagation of femtosecond laser pulses in a 5-mm-thick BBO crystal along the direction of type-I phase-matched second-harmonic generation.An intensity-asymmetric broadband conical emission(500–2000 nm)is demonstrated when a suitable chirp is introduced.It is generated by optical parametric amplification pumped by the second-harmonic light and seeded by the fundamental light which is broadened by cascaded nonlinear processes during second-harmonic generation.

关 键 词：PUMPED FEMTO SECOND 

分 类 号：TN2[电子电信—物理电子学]