Abstract
We demonstrate time-delay switches using the first-order dynamic diffraction light of two-beam coupled light with wavelengths of 632.8, 650, 532, and in a bacteriorhodopsin film. The optimal wavelengths are selected and the relationship between incident intensity and delay time is discussed. A switch delay time ranging from 3.52 to is presented by the wavelength , while a delay time ranging from 1.24 to is demonstrated by the wavelength . On the other hand, the wavelengths of 532 and are not suitable for time-delay switches due to the large variation of first-order diffraction intensity for lower incident intensities.
© 2009 Optical Society of America
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