Diffractive lens fabricated with mostly zeroth-order gratings

被引:52
作者
Chen, FT
Craighead, HG
机构
[1] Sch. of Appl. and Eng. Physics, Cornell University, Ithaca
关键词
D O I
10.1364/OL.21.000177
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate a spherical diffractive lens fabricated in fused quartz for use at the 632.8-nm wavelength. The lens is constructed by use of a modulated two-dimensional binary grating with a high transmitted zeroth-order efficiency. Rigorous eigenmode analysis is used to correlate the desired phase modulation with the fill factor. Fabrication requires only one lithography step. Using the lens, we were able to image a focal spot with a diffraction-limited spot size (FWHM). (C) 1996 Optical Society of America
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页码:177 / 179
页数:3
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