Time-domain investigation of OH ground-state energy transfer using picosecond two-color polarization spectroscopy
作者： Xiangling Chen , Brian D Patterson , Thomas B Settersten
DOI: 10.1016/J.CPLETT.2004.03.025
关键词: Analytical chemistry 、 Laser 、 Far-infrared laser 、 Infrared 、 Rotational energy 、 Excited state 、 Rotational–vibrational spectroscopy 、 Atomic physics 、 Chemistry 、 Ground state 、 Spectroscopy
摘要: Abstract Two-color polarization spectroscopy was used to investigate rotational energy transfer (RET) and relaxation of orientation alignment in the ground electronic state OH an atmospheric-pressure methane–air flame. Two independently tunable lasers produced nearly transform-limited infrared ultraviolet pulses 50 ps duration. The laser excited rovibrational transitions, delayed probed transitions from either directly pumped or collisionally populated states. Alignment times were measured for individual levels X 2 Π 3/2 (v=1) , feasibility time-domain investigation state-to-state processes demonstrated.
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