Photolytic-interference-free, femtosecond two-photon fluorescence imaging of atomic hydrogen
Photolytic-interference-free, femtosecond two-photon fluorescence imaging of atomic hydrogen
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DOI：
10.1364/ol.37.003051
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发表时间：
2012-08-01
期刊：
影响因子：
3.6
通讯作者：
Roy, Sukesh
中科院分区：
文献类型：
--
作者：
Kulatilaka, Waruna D.;Gord, James R.;Roy, Sukesh
我们讨论了利用飞秒（fs）多光子激发对火焰和等离子体中的反应中间体进行无光干涉、高重复率成像。飞秒脉冲的高峰功率使有效的非线性激发，而低能量几乎消除干扰单光子光解过程。我们证明了原理，无干扰，双光子激光诱导荧光线成像的原子氢在碳氢化合物火焰，并讨论了该方法的某些其他原子和分子物种的影响。(C)2012美国光学学会
We discuss photolytic-interference-free, high-repetition-rate imaging of reaction intermediates in flames and plasmas using femtosecond (fs) multiphoton excitation. The high peak power of fs pulses enables efficient nonlinear excitation, while the low energy nearly eliminates interfering single-photon photodissociation processes. We demonstrate proof-of-principle, interference-free, two-photon laser-induced fluorescence line imaging of atomic hydrogen in hydrocarbon flames and discuss the method's implications for certain other atomic and molecular species. (C) 2012 Optical Society of America