Abstract

(1) Photochemical Hole Burning (PHB) has a possibility to offer us an optical memory with ultra-high data storage density of more than 10¹¹ bits/cm² theoretically¹⁾. Such high data density can be achieved by multiplexing the information additional wavelength dimension besides the x-y spatial domain. The multiplexing of the information is realized by burning a sequence of narrow spectral holes as signals in the spectrum of a PHB material. Then the degree of information multiplexing depends on the degree of the multiple holes in the spectrum. The most essential subject for PHB memory is how densely and how many multiple holes can be formed without any interaction between any two holes.

© 1989 Optical Society of America