LINEAR BEHAVIOR OF A NEAR-FIELD OPTICAL-SCANNING SYSTEM

被引：31

作者：

KANN, JL ^{[1
]}

MILSTER, TD ^{[1
]}

FROEHLICH, FF ^{[1
]}

ZIOLKOWSKI, RW ^{[1
]}

JUDKINS, JB ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT ELECT & COMP ENGN,TUCSON,AZ 85721

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1995年 / 12卷 / 08期

关键词：

D O I：

10.1364/JOSAA.12.001677

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A hybrid finite-difference time-domain and angular-spectrum propagation modeling technique is used to study the imaging properties of a near-field optical scanning system with dielectric samples. The model is used to calculate system transfer functions based on scanning sinusoidal gratings of various spatial periods or on scanning a straight edge and then taking a derivative and a Fourier transform. Results from these two methods are in good agreement. A square-wave grating is simulated by Linear addition of component sinewave grating images that are weighted by the transfer function. The image generated by this method agrees well with an image generated by direct use of the hybrid model. In the region of parameter space investigated with the model, the near-field optical scanning system exhibits nearly linear behavior. operation depends on the index of the sample and on the probe-to-sample spacing.

引用

页码：1677 / 1682

页数：6

共 20 条

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