High refractive index Fresnel lens on a fiber fabricated by nanoimprint lithography for immersion applications

被引:35
作者
Koshelev, Alexander [1 ]
Calafiore, Giuseppe [1 ]
Pina-Hernandez, Carlos [1 ]
Allen, Frances I. [2 ,3 ]
Dhuey, Scott [2 ]
Sassolini, Simone [2 ]
Wong, Edward [2 ]
Lum, Paul [3 ]
Munechika, Keiko [1 ,2 ]
Cabrini, Stefano [2 ]
机构
[1] aBeam Technol Inc, 22290 Foothill Blvd St 2, Hayward, CA 94541 USA
[2] Lawrence Berkeley Natl Lab, Mol Foundry, 1 Cyclotron Rd, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Biomol Nanotechnol Ctr, Berkeley, CA 94720 USA
基金
美国国家科学基金会;
关键词
FOCUSED ION-BEAM;
D O I
10.1364/OL.41.003423
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this Letter, we present a Fresnel lens fabricated on the end of an optical fiber. The lens is fabricated using nano-imprint lithography of a functional high refractive index material, which is suitable for mass production. The main advantage of the presented Fresnel lens compared to a conventional fiber lens is its high refractive index (n = 1.68), which enables efficient light focusing even inside other media, such as water or an adhesive. Measurement of the lens performance in an immersion liquid (n = 1.51) shows a near diffraction limited focal spot of 810 nm in diameter at the 1/e(2) intensity level for a wavelength of 660 nm. Applications of such fiber lenses include integrated optics, optical trapping, and fiber probes. (C) 2016 Optical Society of America
引用
收藏
页码:3423 / 3426
页数:4
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