Abstract

Holeburning holography is an ultrahigh density image storage technique. Since the memory capacity is governed by the ratio of the inhomogeneous-to-homogeneous linewidths, 10³~10⁶ images can be recorded in a single sample spot. An extensive study on holebuming holography has been carried out by Wild et.al for organic dye-doped polymer samples¹-⁴. On the other hand, holeburning holography has not been carried out for crystal samples, because there are few crystals exhibiting persistent holes. We have performed holeburning holography to record images for Eu³⁺:Y₂SiO₅ crystal which has been known for exhibiting persistent holes. Moreover, Eu³⁺:Y₂SiO₅ has other unique features⁵,⁶ such as narrow holewidth and high holeburning quantum efficiency. By using this crystal, we have also succeeded in real-time recording of a moving object.

© 1994 Optical Society of America