A holographic technique for investigating photochemical reactions

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Abstract
A new experimental technique for following the progress of a photochemical reaction is described. The technique involves following the temporal growth in intensity of a hologram produced by the interference of two beams in a medium containing the species whose photochemistry is being investigated. The theory of the formation of a photochemical hologram is described and a simple expression obtained that relates the growth of the hologram to photochemical parameters of interest. The technique is used to study the photodissociation of dimethyl‐s‐tetrazine and hydrogen abstraction by camphorquinone in polyvinylcarbazole matrices.