The technology of three-dimensional optical storage

Continuously increasing storage density and storage ability is one of the hot issues of information science. Three-dimensional optical storage is an effective way to solve this problem in highest measure for realizing extreme large recording capacity. And then the progress of three-dimensional optical storage, the principle of data storage, as well as problems of various ways of storage need to be solved about 2-photon 3D optical storage, spectral hole burning for data storage, holographic storage, and three-dimensional optical storage in transparent material using a femtosecond pulsed laser.