Increase the storage density of solid immersion lens system by high-pass angular spectrum filter method

被引：10

作者：

Lu, YH ^{[1
]}

Xie, JP ^{[1
]}

Zhang, JY ^{[1
]}

Ming, H ^{[1
]}

Wang, P ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2002年 / 203卷 / 1-2期

关键词：

solid immersion lens; optical storage; angular spectrum;

D O I：

10.1016/S0030-4018(02)01124-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper the optical distribution in the near-field region of solid immersion lens (SIL) is investigated from the viewpoint of angular spectrum. Because of the big numeric aperture (NA) of objective in SIL storage system, the polarization of incident laser is also considered. Based on this investigation, a kind of high-pass angular spectrum filter method is proposed to decrease the optical spot size. The effect of filter in SIL system is analyzed in detail. Our theoretical analysis shows that this kind of filter can decrease the spot size by nearly 40% and light intensity loss by around 11%. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：87 / 92

页数：6

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