Abstract
An experimental arrangement is described that makes possible the production of holographic gratings with lasers that have low temporal and spatial coherence. This scheme is incorporated into a strategy for measuring the spatial spread of photochemistry. In preliminary experiments on single crystals of diacetylene TS-6 (diacetylene-bis-( p-toluenesulfonate)) we show that high-quality gratings can be produced directly with a XeCl laser and that it is possible to read out from these gratings data from which the refractive index profile for the grating stripes can be directly determined.
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