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Doctoral thesis
Open access
English

Coherent control of the vision process in living animals

ContributorsGaulier, Geoffrey
Defense date2021-05-11
Abstract

Vision is usually assumed to be sensitive to the light intensity and spectrum but not to its spectral phase. However, experiments performed on retinal proteins in solution showed that the first step of vision consists in an ultrafast photo-isomerization of the retinal moiety that can be coherently controlled by shaping the phase of femtosecond laser pulses, especially in the multi-photon interaction regime. The link between these experiments in solution and the complex biological process allowing vision is not trivial, and has not been demonstrated. In order to unify the two points of view, I used a system to measure the electrical signals emitted by retina, which was probed using several femtosecond beams. The experimental part was carried out partly ex-vivo (i.e., on extracted retinas), and partly in-vivo (i.e., on anesthetized mice).

eng
Keywords
  • Coherent control
  • Rhodopsin
  • Ultrafast laser
  • Pulse shaping
  • Conical Intersection
  • Vision
Research group
Citation (ISO format)
GAULIER, Geoffrey. Coherent control of the vision process in living animals. 2021. doi: 10.13097/archive-ouverte/unige:152542
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Creation06/17/2021 2:55:00 PM
First validation06/17/2021 2:55:00 PM
Update time08/14/2023 11:27:54 AM
Status update08/14/2023 11:27:54 AM
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