中国物理B ›› 2002, Vol. 11 ›› Issue (10): 1073-1075.doi: 10.1088/1009-1963/11/10/319
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
魏劲松, 阮昊, 施宏仁, 干福熹
Wei Jin-Song (魏劲松), Ruan Hao (阮昊), Shi Hong-Ren (施宏仁), Gan Fu-Xi (干福熹)
摘要: A novel read-only super-resolution optical disc structure (substrate/mask layer/dielectric layer) is proposed in this paper. By using a Si thin film as the mask layer, the recording pits with a diameter 380nm and a depth 50nm are read out on the dynamic measuring equipment; the laser wavelength α is 632.8nm and the numerical aperture is 0.40. In the course of reproduction, the laser power is 5mW and the rotation velocity of the disc is 4m·s-1. The optimum thickness of the Si thin film is 18nm and the signal-to-noise ratio is 32dB.
中图分类号: (Optical storage systems, optical disks)