Study on the rewritability of bisazobenzene-containing films in optical storage based on two-photon process |
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| Authors: | Daqiao Hu Zhoushun Zhang Yanhua Luo Wenhao Huang |
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| Institution: | a CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Key Laboratory of Optoelectronic Science and Technology, Anhui Province, Hefei, Anhui 230026, PR Chinab Department of Precision Machinery and Precision Instrument, University of Science and Technology of China, Hefei, Anhui 230026, Chinac Department of Chemistry, Anhui University, Hefei, Anhui 230039, China |
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| Abstract: | In this paper, we use a two-photon technique to record data points on bisazobenzene-containing films. The recording data points are evidently polarization dependent. It is found that the recording data points can be erased by the linearly polarized light whose polarization direction is perpendicular to that of the recording beam and then, in the same region, new data can be rewritten after erasing. In addition, the recorded data can also be erased completely by the circularly polarized light. Compared with linearly polarized beam, the circularly polarized light is a better choice for erasure as no main orientation is regained after erasing rather than reorientation. |
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| Keywords: | Rewritability Birefringence Polarization storage Bisazobenzene Two-photon |
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