title: Impulsive rotational Raman scattering of N2 by a remote "air laser" in femtosecond laser filament.
abstract: We report on experimental realization of impulsive rotational Raman scattering from neutral nitrogen molecules in a femtosecond laser filament using an intense self-induced white-light seeding "air laser" generated during the filamentation of an 800 nm Ti:sapphire laser in nitrogen gas. The impulsive rotational Raman fingerprint signals are observed with a maximum conversion efficiency of ∼0.8%. Our observation provides a promising way of remote identification and location of chemical species in the atmosphere by a rotational Raman scattering of molecules.
authors: Jielei
authors: J
authors: Ni
authors: Wei
authors: W
authors: Chu
authors: Haisu
authors: H
authors: Zhang
authors: Bin
authors: B
authors: Zeng
authors: Jinping
authors: J
authors: Yao
authors: Lingling
authors: L
authors: Qiao
authors: Guihua
authors: G
authors: Li
authors: Chenrui
authors: C
authors: Jing
authors: Hongqiang
authors: H
authors: Xie
authors: Huailiang
authors: H
authors: Xu
authors: Ya
authors: Y
authors: Cheng
authors: Zhizhan
authors: Z
authors: Xu