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Optical Image Contrast Reversal Using Bacteriorhodopsin Films |
| WANG Ying-Li;YAO Bao-Li;MENKE Neimule;ZHENG Yuan;LEI Ming;CHEN Guo-Fu |
| State Key Laboratory of Transient Optics Technology, Xi’an Institute of Optics and Precision Mechanics,
Chinese Academy of Sciences, Xi’an 710068 |
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| Cite this article: |
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WANG Ying-Li, YAO Bao-Li, MENKE Neimule et al 2005 Chin. Phys. Lett. 22 1121-1123 |
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Abstract The implementation of image contrast reversal by using a photochromic material of Bacteriorhodopsin (BR) films is demonstrated with two methods based on the optical properties of BR. One is based on the absorption difference between the B and M states. Images recorded by green light can be contrast reversed readout by violet light. The other is based on the photoinduced anisotropy of BR when it is excited by linear polarization light. By placing the BR film between two crossed polarizers (i.e. a polarizer and an analyser), the difference of polarization states of the recorded area and the unrecorded area can be detected, and thus different contrast images can be obtained by rotating the polarization axis of the analyser.
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| Keywords:
42.30.Va
78.66.Qn
42.25.Lc
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Published: 01 May 2005
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