title: Polychromatic reconstruction for volume holographic memory.
abstract: We propose a method of reconstructing an image from a volume hologram at a wavelength different from the recording one. Spectrally broad but spatially coherent light was used as a probe beam. Each angular spectral component of the recorded hologram could be Bragg matched at one particular wavelength within the broadband spectrum. We experimentally demonstrated that a whole image could be reconstructed by using polychromatic light, whereas only a partial image was obtained by using single-mode laser light. We discuss the required bandwidth of the probe beam and the deformation of the reconstructed image.
authors.affiliation: Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan. fujimura@iis.u-tokyo.ac.jp
authors.forename: Ryushi
authors.initials: R
authors.lastname: Fujimura
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Shimura
authors.forename: Kazuo
authors.initials: K
authors.lastname: Kuroda