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Optical Engineering

Three-dimensional optical data storage in a novel photochromic material with two-photon writing and one-photon readout
Author(s): Yongjun Zhou; Huohong Tang; Wenhao Huang; Andong Xia; Fan Sun; Fushi Zhang
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Paper Abstract

We have demonstrated three-dimensional optical data storage in a novel photochromic material with two-photon excitation. The data are read out with a homemade confocal fluorescence microscope combined with the three-dimensional writing system. Since the degree of destruction is closely related with the total dwell time of the readout laser, we try to read out the data through an optimization among the doped concentration of photochromic material of the PMMA film, the readout power, and the dwell time of the laser at each data bit. Using the optimized readout condition, it is possible to achieve 107 readout cycles with very little erasure of the data at the scanning speed of a 50× CD driver.

Paper Details

Date Published: 1 March 2005
PDF: 5 pages
Opt. Eng. 44(3) 035202 doi: 10.1117/1.1869992
Published in: Optical Engineering Volume 44, Issue 3
Show Author Affiliations
Yongjun Zhou, Ohio Univ. (United States)
Huohong Tang, Univ. of Science and Technology of China (China)
Wenhao Huang, Univ. of Science and Technology of China (China)
Andong Xia, Institute of Chemistry (China)
Fan Sun, Tsinghua Univ. (China)
Fushi Zhang, Tsinghua Univ. (China)


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