REAL-TIME PROBING OF 2-PHOTON ABSORPTION WITH PHASE RELATED PULSES

被引：9

作者：

KAWASHIMA, H

NELSON, KA

机构：

[1] Department of Chemistry, Massachusetts Institute of Technology, Cambridge

来源：

JOURNAL OF CHEMICAL PHYSICS | 1994年 / 100卷 / 09期

关键词：

D O I：

10.1063/1.467080

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Real-time probing of two-photon absorption is formulated. A two-photon polarizability is introduced and its linear response is derived. The impulse response is shown to depend on the optical phase of incident radiation, and the nonstationary polarizability can be monitored by using a phase-related pair of pulses. Coherent molecular vibration in ''dark'' electronic states (accessible only through two-photon absorption) can be observed. The results are compared to time-domain observations of coherent vibrations initiated through one-photon absorption or impulsive stimulated Raman scattering. An estimate of the absolute signal intensity is presented.

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页码：6160 / 6165

页数：6

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