Multiple Photon-Gated Persistent Spectral Holes Burnt over A Whole Absorption Band in A New System of Frequency-Domain Optical Storage Material

Abstract

Persistent spectral hole burning(PSHB) permits use of the frequency domain for achieving ultrahigh-density optical information storage in which the presence of a spectral hole at a particular laser frequency utilized to encode much many bits within a single focused laser spot. The ultimate storage density of the three-dimensional(x,y,f) optical memories can be increased to 109-1011 bits/cm2[1].