Application of bacteriorhodopsin film for polarization phase-shifting interferometry

Autor:	Ming Lei, Liju Chen, Yingli Wang, Junhe Han, Peng Gao, Baoli Yao
Rok vydání:	2008
Předmět:	Polarized light microscopy Optics Materials science business.industry Linear polarization Optical polarization Elliptical polarization Linear dichroism business Polarization (waves) Waveplate Atomic and Molecular Physics and Optics Circular polarization
Zdroj:	Journal of Modern Optics. 55:2215-2222
ISSN:	1362-3044 0950-0340
DOI:	10.1080/09500340802082350
Popis:	Photoinduced anisotropy in bacteriorhodopsin (BR) film is based on photoanisotropic selective bleaching of BR molecules under linearly polarized excitation light. It is modulated by the polarization orientation of the linearly polarized light. The anisotropic information recorded in the BR film is read by a circularly polarized light, which is in turn converted into an elliptical polarized light by the BR film. The rotation angle and the ellipticity of the elliptical polarized light are dependent on the polarization orientation of the linearly polarized excitation light. A phase-shifting interferometer based on the photoinduced anisotropy of BR film is presented theoretically and experimentally. Phase shift is controlled by the polarization orientation of the external excitation light, thus, the phase shift can be controlled without moving parts inside the interferometer, which contributes to the mechanical stability of the system.
Databáze:	OpenAIRE
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