Dynamic stark control of photochemical processes

Benjamin J Sussman, David Townsend, Misha Yu Ivanov, Albert Stolow

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Abstract

A method is presented for controlling the outcome of photochemical reactions by using the dynamic Stark effect due to a strong, nonresonant infrared field. The application of a precisely timed infrared laser pulse reversibly modifies potential energy barriers during a chemical reaction without inducing any real electronic transitions. Dynamic Stark control (DSC) is experimentally demonstrated for a nonadiabatic photochemical reaction, showing substantial modification of reaction channel probabilities in the dissociation of IBr. The DSC process is nonperturbative and insensitive to laser frequency and affects all polarizable molecules, suggesting broad applicability.

Original languageEnglish
Pages (from-to)278-281
Number of pages4
JournalScience
Volume314
Issue number5797
DOIs
Publication statusPublished - 13 Oct 2006

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