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Rovibrational State-Selectivity in Photoassociation through Multi-photonTransitions
Rong Wang*,Ming-hui Qiu,Jun-ling Xiu
Author NameAffiliationE-mail
Rong Wang* School of Science, Dalian Jiaotong University, Dalian 116028, China wangrong@djtu.edu.cn 
Ming-hui Qiu School of Science, Dalian Jiaotong University, Dalian 116028, China  
Jun-ling Xiu School of Science, Dalian Jiaotong University, Dalian 116028, China  
Abstract:
The rovibrational state-selectivity in photoassociation (PA) is investigated for the ground electronic state of OH radical. The calculated results show that population can be transferred from continuum state to the target states through three-, four-, and nine-photon transitions by choosing suitable pulse parameters and initial collision energy. To control population transfer to a lower rovibrational state, a shorter pulse frequency has to be chosen and the photon number transferred to target state should be increased. In PA process, some associated OH radicals can be dissociated via intermediate and background states, which decreases the nal population of the target state.
Key words:  Photoassociation, Multi-photon transition, State-selectivity, Intermediate state
FundProject:
光缔合过程中多光子振转态选择性跃迁
王荣*,邱明辉,修俊玲
摘要:
研究了光缔合过程中OH分子基电子态的振转态选择性跃迁. 计算结果表明通过选择适当的初始碰撞能与光场参数,两碰撞原子可以利用三光子、四光子与九光子跃迁,从连续态跃迁至目标态. 通过选取较低的光场频率,增加跃迁至目标态的光子数来控制分子布居跃迁至较低的振转态. 在光缔合过程中, 部分缔合的分子通过中间态与背景态重新发生解离,解离过程降低了目标态的布居分布.
关键词:  光缔合,多光子跃迁,态选择性,中间态
DOI:10.1063/1674-0068/27/05/497-502
分类号: