细菌视紫红质薄膜中红光的群速调控研究

Based on coherent population oscillation effect, group-velocity control of light pulses, whose central wavelength was set to be 568 nm, could be realized in bacteriorhodopsin(bR) film and bR aqueous solution. In this paper, we achieved slow light in bR film with the sinusoidally modulated light pulses at the wavelength of 632.8 nm. The group velocity was decreased to the order of 1 mm/s. We also investigated the influences of the light intensity and modulation frequency on the group velocity systematically. The results show that the bR film or bR resolutions are able to control the group velocity of light pulses with a broad spectrum range.