Ultrasmall focusing spot with a long depth of focus based on polarization and phase modulation

被引：102

作者：

Sun, CC ^{[1
]}

Liu, CK ^{[1
]}

机构：

[1] Natl Cent Univ, Inst Opt Sci, Chungli 320, Taiwan

来源：

OPTICS LETTERS | 2003年 / 28卷 / 02期

关键词：

D O I：

10.1364/OL.28.000099

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A design for focusing an incoming light into an ultrasmall spot with a long depth of focus is proposed. We use a phase plate with three concentric regions to modulate the incoming light from radial polarization into outward-inward-outward polarization. The analysis shows that the design is more suitable for a lens with a high numerical aperture because much energy is concentrated in the main lobe of the focus spot. (C) 2003 Optical Society of America.

引用

页码：99 / 101

页数：3

共 5 条

[1] Roles of polarization, phase and amplitude in solid immersion lens systems [J].

Helseth, LE .

OPTICS COMMUNICATIONS, 2001, 191 (3-6) :161-172

[2] Focusing light to a tighter spot [J].

Quabis, S ;

Dorn, R ;

Eberler, M ;

Glöckl, O ;

Leuchs, G .

OPTICS COMMUNICATIONS, 2000, 179 (1-6) :1-7

[3] ELECTROMAGNETIC DIFFRACTION IN OPTICAL SYSTEMS .2. STRUCTURE OF THE IMAGE FIELD IN AN APLANATIC SYSTEM [J].

RICHARDS, B ;

WOLF, E .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1959, 253 (1274) :358-379

[4]

Stamnes J.J., 1986, WAVES FOCAL REGIONS

[5] An optical pickup using a diffractive optical element for a high-density optical disc [J].

Yang, GG .

OPTICS COMMUNICATIONS, 1999, 159 (1-3) :19-22

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