著者
河田 聡 波多野 洋
出版者
一般社団法人 日本生体医工学会
雑誌
BME (ISSN:09137556)
巻号頁・発行日
vol.11, no.5, pp.3-11, 1997-05-10 (Released:2011-09-21)
参考文献数
25
著者
田中 拓男 河田 聡
出版者
一般社団法人 レーザー学会
雑誌
レーザー研究 (ISSN:03870200)
巻号頁・発行日
vol.32, no.1, pp.11-16, 2004 (Released:2006-03-17)
参考文献数
20

Three-dimensional multi-layered optical storage is one of the most promising methods that break the limitation of recording density in optical storage. It stores the bit information onto the multilayered recording planes inside the thick recording medium and realizes the tremendous large recording capacity. This paper describes the recording/reading principles, the systems, and the materials suitable for three-dimensional multi-layered memory. We also present the experimental results that using photochromic organic materials and rhodamine-B-doped and Au(III)-doped PMMA for recording medium.
著者
河田 聡 高岡 秀行 古川 祐光
出版者
社団法人 日本分光学会
雑誌
分光研究 (ISSN:00387002)
巻号頁・発行日
vol.45, no.2, pp.93-99, 1996-04-15 (Released:2010-06-28)
参考文献数
9
被引用文献数
1 1

We developed a near-field scanning optical microscope (NSOM) giving infrared spectra in an area smaller than the diffraction limit of the infrared light. The developed NSOM features a probe which is equipped with a slit aperture to improve the efficiency in collecting the near-field light. The illumination light is generated with a Michelson interferometer as an interference light and the transmission spectrum of sample at the local position is given through the slit of probe. The experimental results with a test chart and a two-layered film show that the spatial resolution of the IR-NSOM developed depends only on the slit width and not on the wavelength of the illumination light. The spatial resolution of the microscope has been numerically analyzed with finite-difference time-domain (FD-TD) method.