SIMULTANEOUS TWO-PHOTON ABSORPTION THREE-DIMENSIONAL OPTICAL RECORDING MEDIUM AND SIMULTANEOUS TWO-PHOTON THREE-DIMENSIONAL OPTICAL RECORDING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent reduction of recording sensitivity ascribable to attenuation of recording light at a deep part in a two-photon absorption three-dimensional optical recording medium having a multilayer structure.;SOLUTION: The simultaneous two-photon absorption three-dimensional optical recording medium for recording three-dimensionally record pits in the recording medium by simultaneous two-photon absorption and reading these recorded record pits, has a multilayer structure prepared by laminating recording layers and intermediate layers, wherein information is recorded on the recording layers by simultaneous two-photon absorption, the intermediate layers do not change by a recording light, and sensitivities of a part of or all of the recording layers are different.;COPYRIGHT: (C)2010,JPO&INPIT