[OPTICAL REVIEW Vol. 8, No. 3 (2001) 206-207]
Two-photon Absorption in Photochromic Layer with Highly Localized Coherent Photons
Tsuyoshi TSUJIOKA1,* and Masahiro IRIE2
1New Materials Research Center, SANYO Electric Co., Ltd., 1-18-13, Hashiridani, Hirakata, Osaka, 573-8534 Japan, 2Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 6-10-1, Hakosaki, Higashi-ku, Fukuoka, 812-8581 Japan
(Received March 15, 2001; Accepted April 12, 2001)
Two-step two-photon absorption on a photochromic layer with coherent photons was simulated by the Monte-Carlo method. The simulation indicated that highly localized photons, such as near-field light with a very small aperture, induce an effective two-photon reaction beyond the 2nd-order dependence.
Key words : two-photon absorption, photochromism, optical memory, near-field