Two-photon-induced polarization-multiplexed and multilevel storage in photoisomeric copolymer film
Optics Letters, Vol. 35, Issue 1, pp. 46-48 (2010)
http://dx.doi.org/10.1364/OL.35.000046
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Abstract
We present a two-photon-induced polarization-multiplexed and multilevel data storage method with a bis azobenzene copolymer film. A polarization-adjustable femtosecond pulsed laser is used as writing beam to induce anisotropy, and the recorded information is retrieved by a CCD sensor from the film with corresponding polarized illumination. It is found that the optical axis of bisazobenzene molecules can be reoriented under two-photon excitation by the polarized femtosecond laser via a photoisomerization process. Polarization-multiplexed and multilevel storage is demonstrated by using this method. The capability to combine both advantages of these distinct techniques makes it a novel approach to obtain higher optical data density.
© 2009 Optical Society of America
OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(210.0210) Optical data storage : Optical data storage
(210.4680) Optical data storage : Optical memories
(210.4770) Optical data storage : Optical recording
ToC Category:
Optical Data Storage
History
Original Manuscript: August 4, 2009
Revised Manuscript: November 17, 2009
Manuscript Accepted: November 22, 2009
Published: December 24, 2009
Citation
Yanlei Hu, Zhoushun Zhang, Yuhang Chen, Qijin Zhang, and Wenhao Huang, "Two-photon-induced polarization-multiplexed and multilevel storage in photoisomeric copolymer film," Opt. Lett. 35, 46-48 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-1-46
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