Abstract

The amount of processed data has been continuing to increase day by day. The demands for high-speed, high-capacity data storage are also increasing. The demands on optical recording media are the same as those on other kinds of media, but it is well-known that, in principle, the recording density is limited by the optical diffraction limit. Therefore, new technologies the recording density to improve the density, including volume optical recording and reading methods using holography [1], as well as two-dimensional optical recording and reading method using super-resolution near field structures [2].

© 2013 Japan Society of Applied Physics, Optical Society of America