Vibrational Hyper-Raman Molecular Spectroscopy with Entangled Photons

被引：12

作者：

Chen, Feng ^{[1
,2
]}

Mukamel, Shaul ^{[1
,2
]}

机构：

[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[2] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

ACS PHOTONICS | 2021年 / 8卷 / 09期

关键词：

entangled photons; hyper-Raman spectroscopy; Liouville-space pathways; one-photon resonances; ABSORPTION; STATES; FLUORESCENCE;

D O I：

10.1021/acsphotonics.1c00777

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Time-energy entangled photons produced by spontaneous parametric down-conversion (SPDC) are employed to calculate vibrational hyper-Raman (HR) signals of the conjugated organic chromophore Wu112. Compared with classical light, time-energy entanglement can provide selectivity of Liouville-space pathways and thus suppress the strong broad electronic-Raman background arising from one-photon resonances of the intermediate states. The entangled-photon HR signal scales linearly with the SPDC pump field intensity rather than quadratically for classical light, which allows weak-field measurements on fragile samples.

引用

页码：2722 / 2727

页数：6

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