1 March 2005 Three-dimensional optical data storage in a novel photochromic material with two-photon writing and one-photon readout
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Optical Engineering, 44(3), 035202 (2005). doi:10.1117/1.1869992
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.
Yongjun Zhou, Huohong Tang, Wenhao Huang, Andong Xia, Fan Sun, Fushi Zhang, "Three-dimensional optical data storage in a novel photochromic material with two-photon writing and one-photon readout," Optical Engineering 44(3), 035202 (1 March 2005). http://dx.doi.org/10.1117/1.1869992
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KEYWORDS
Signal to noise ratio

Optical storage

Photochromic materials

3D optical data storage

Luminescence

Confocal microscopy

Polymethylmethacrylate

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