We review the main optical properties of bacteriorhodopsin that are relevant to its use as a spatial light modulator. A model is described for the transmittance of a film placed between crossed polarizers in which photoinduced birefringence occurs. We show when the transmittance is proportional to the write intensity. We use this property in a joint transform correlator for incoherent-to-coherent conversion and effective square-law modulation in the Fourier plane.
© 1999 Optical Society of America
(100.1160) Image processing : Analog optical image processing
(100.4550) Image processing : Correlators
(160.1190) Materials : Anisotropic optical materials
(160.4890) Materials : Organic materials
(230.6120) Optical devices : Spatial light modulators
David Sánchez-de-la-Llave and Michael A. Fiddy, "Incoherent-to-Coherent Conversion and Square-Law Transmission Based on Photoinduced Birefringence in Bacteriorhodopsin Films," Appl. Opt. 38, 815-821 (1999)