Abstract:
Optical information storage is the main method of digital information storage. The storage density and the possibility to further improve storage capacity were limited for the deficiencies existing in the conventional two-dimensional optical information storage. The confocal/two-photon fluorescence scanning microscope system was constructed based on the three-dimensional optical information storage mechanism on the photobleaching material. Three-dimensional optical information storage and retrieval were achieved by means of femtosecond laser on a new photobleaching ATFTBAr fluorene derivative as a storage material. The storage reached four layers and each layer spacing and information point spacing were respectively up to 10 m and 8 m. The signal intensity of the information point was identified and contrasted, and a detailed analysis of the refractive index mismatch caused by a signal crosstalk was made. Research shows that the experimental system and the establishment of the storage material can be used to achieve better three-dimensional optical information storage.