Abstract
The first vibrational spectrum of batho-rhodopsin (Batho), an intermediate formed during the initial 50 ps of the visual process of rhodopsin (Rh) at room temperature, has been measured by picosecond time-resolved coherent anti-Stokes scattering (PTR/CARS). The Batho spectrum is obtained through a third-order susceptibility (χ(3)) analysis of the measured PTR/CARS data in which the resonant and non-resonant contributions to the signal are separated. The PTR/CARS spectrum of Batho reveals structural changes during the Rh photo-reaction which have not previously been recognized.
© 1994 Optical Society of America
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