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Study of visual pigments by Ultrafast laser spectroscopy (CAT#: STEM-ST-0332-WXH)

Introduction

Visual pigments are the light-absorbing molecules that mediate vision. They consist of an apoprotein, opsin, covalently linked to the chromophore cis-retinal. Vision is effected through the absorption of a photon by cis-retinal which is isomerised to trans-retinal.




Principle

Ultrafast laser spectroscopy involves studying ultrafast events that take place in a medium using ultrashort pulses and delays for time resolution. It usually involves exciting the medium with one (or more) ultrashort laser pulse(s) and probing it a variable delay later with another.

Applications

study photoinduced dynamical processes in atoms, molecules, nanostructures, and solids