Theoretical study of signal-to-noise ratio on near-field photochromic memory with fluorescence readout

被引：13

作者：

Tsujioka, T

Irie, M

机构：

[1] Sanyo Elect Co Ltd, New Mat Res Ctr, Hirakata, Osaka 573, Japan

[2] Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Higashi Ku, Fukuoka 812, Japan

来源：

APPLIED OPTICS | 1999年 / 38卷 / 23期

关键词：

D O I：

10.1364/AO.38.005066

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The signal-to-noise ratio (SNR) on the fluorescence readout of a near-field photochromic memory was theoretically studied. Under various conditions the shot-noise-limited SNR was analyzed. SNR by bright spot recording (BSR) that was better than that by dark spot recording (DSR) was obtained under the condition of low writing power or wide bandwidth. Under the condition of bandwidth W = 1 MHz and P-write = 10(-8) W only ESR can attain sufficiently high SNR, and the SNR was greater by as much as 30 dB than that of DSR. It was concluded that BSR is a promising method for high-density near-field photochromic memory with a fluorescence readout. (C) 1999 Optical Society of America.

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收藏

页码：5066 / 5072

页数：7

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