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Two-Photon Absorbing Molecules as Potential Materials for 3D Optical Memory

Interdisciplinary Graduate School of Medicine and Engineering, Division of Medicine and Engineering Science, Life Environment Medical Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan
Appl. Sci. 2014, 4(1), 1-18;
Received: 15 November 2013 / Revised: 16 December 2013 / Accepted: 9 January 2014 / Published: 22 January 2014
(This article belongs to the Special Issue Optical Memory)
PDF [374 KB, uploaded 22 January 2014]


In this review, recent advances in two-photon absorbing photochromic molecules, as potential materials for 3D optical memory, are presented. The investigations introduced in this review indicate that 3D data storage processing at the molecular level is possible. As 3D memory using two-photon absorption allows advantages over existing systems, the use of two-photon absorbing photochromic molecules is preferable. Although there are some photochromic molecules with good properties for memory, in most cases, the two-photon absorption efficiency is not high. Photochromic molecules with high two-photon absorption efficiency are desired. Recently, molecules having much larger two-photon absorption cross sections over 10,000 GM (GM= 10−50 cm4 s molecule−1 photon−1) have been discovered and are expected to open the way to realize two-photon absorption 3D data storage. View Full-Text
Keywords: 3D optical memory; two-photon absorption; photochromism 3D optical memory; two-photon absorption; photochromism

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Ogawa, K. Two-Photon Absorbing Molecules as Potential Materials for 3D Optical Memory. Appl. Sci. 2014, 4, 1-18.

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