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논문 기본 정보

자료유형
학술저널
저자정보
이진의 (Center for Information Storage Device, Yonsei University) 김완진 (Center for Information Storage Device) 최현 (Center for Information Storage Device) 김태섭 (Center for Information Storage Device) 윤용중 (Center for Information Storage Device) 박노철 (Center for Information Storage Device) 박영필 (Center for Information Storage Device)
저널정보
정보저장시스템학회 정보저장시스템학회논문집 정보저장시스템학회논문집 제2권 제4호
발행연도
2006.1
수록면
224 - 229 (6page)

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There has been studied flow to minimize the spot size to increase data capacity. Optical data storage devices are being developed near practical limits with wavelength and NA of 405nm and 0.85. There has been studied many types of next generation storage devices such as blu-ray multilayer system, probe based data storage and holographic data storage. Among these data storage devices, solid immersion lens(SIL) based near field recording (NFR) has been widely studied. In this system, SIL is the key component that focuses the laser beam with a very small size which enables ultra high data capacity. Therefore, optical performance evaluation system is required for SIL assembly. In this dissertation, a simple and accurate SIL assembly measurement method is proposed with wedge plate lateral shearing interferometer(LSI). Wedge plate LSI is cheaper than commercialized interferometer, robust to the vibration and the moving distance for phase shifting is large that is order of micrometer. We designed the thickness, wedge angle, material, surface quality and wavelength of wedge plate as 1mm, 0.02degree, fused silica, lamda/10(10-5) and 405nm, respectively. Also, we confirmed simulation and experimental results with quantitative analysis. This simple wedge plate LSI can be applied to different types of SIL such as solid immersion mirror(SIM), hemispherical, super-hemispherical and elliptical SIL.

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