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- Title
- Confocal reflection readout thresholds in two-photon-induced optical recording
- Author(s)
- Li, Xiangping; Chon, James W. M.; Gu, Min
- Abstract
- Confocal reflection readout thresholds in two-photon-induced optical recording in photoisomerization polymer are studied both theoretically and experimentally. A threshold of the axial response from a planar reflector with a refractive-index change of the order of 10(-2) is revealed. However, the threshold is reduced to 0.006 when strong forward scattering caused by the recorded bits leads to multiple reflection between the bit and the rare surface, which enhances the image contrast and reduces the readout threshold. The quality of the reconstructed bit image is strongly dependent on the refractive-index mismatch at the sample rare interface as well as the distance between the recorded position and the rare surface.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Source
- Applied Optics, Vol. 47, no. 26 (Sep 2008), pp. 4707-4713
- Publication year
- 2008
- Keyword(s)
- Absorption; Data-storage; Excitation; Memory; Microscopy; Polymer-films; Refractive-index
- Publisher
- Optical Society of America
- ISSN
- 0003-6935
- Publisher URL
- http://dx.doi.org/10.1364/AO.47.004707
- Copyright
- Copyright © 2008 Optical Society of America. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/AO.47.004707. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
- Full text
- Peer reviewed
