Simultaneous time and frequency gating of weak molecular fluorescence in a thick nonlinear crystal

被引:5
作者
Branderhorst, MPA [1 ]
Wasylczyk, P [1 ]
Walmsley, IA [1 ]
机构
[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
关键词
D O I
10.1063/1.2172297
中图分类号
O59 [应用物理学];
学科分类号
摘要
Time and frequency gating of molecular spontaneous emission at a less than one photon per mode level is achieved using phase matching properties of sum frequency generation in a 3 mm type I BBO crystal. The results of time and frequency resolved fluorescence measurements from a vibrational wavepacket in diatomic potassium molecules are presented. The experimental arrangement is simplified compared to the classical setup which uses a short crystal and monochromator. Both the signal and the signal to noise ratio increase. (c) 2006 American Institute of Physics.
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页数:3
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