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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Superpositions of chiral amplitudes

Jeffrey A. Cina, Robert A. Harris

Published Jun 17, 1994• 0 citations
Publisher

Abstract

A recent analysis has suggested that a version of femtosecond pump-probe spectroscopy, in which both pulses are themselves optical phase-controlled pulse pairs, would be useful in preparing and measuring chiral coherences. These coherences are absent in a racemic mixture or an incoherent sum of left- and right-handed states. Here we discuss the preparation of chiral coherences and the observation of their degradation via interaction with a low temperature medium.

DOI
10.1117/12.178098

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A recent analysis has suggested that a version of femtosecond pump-probe spectroscopy, in which both pulses are themselves optical phase-controlled pulse pairs, would be useful in preparing and measuring chiral coherences. These coherences are absent in a racemic mixture or an incoherent sum of left- and right-handed states. Here we discuss the preparation of chiral coherences and the observation of their degradation via interaction with a low temperature medium.
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We review the principles and some recent advances in the theory of coherent control of molecular processes and discuss some of its experimental realizations. Amongst the topics discussed are: bichromatic and pump-dump control; the interference between N-photons and M-photon processes; the optical conversion of a mixture of left- and right-handed chiral molecules into an ensemble containing molecules of the handedness of choice; control of collisional processes; control over chaotic dynamics; effects of decoherence; the solution of the non-degenerate quantum control problem; and control over spontaneous emission and other decay processes.