Issue 9, 2016

Optofluidic lens with low spherical and low field curvature aberrations

Abstract

This paper reports an optofluidic lens with low spherical and low field curvature aberrations through the desired refractive index profile by precisely controlling the mixing between ethylene glycol and deionized water in an optofluidic chip. The experimental results demonstrate that the spherical aberration is reduced to 19.5 μm and the full width at half maximum of the focal point is 7.8 μm with a wide divergence angle of 35 degrees. In addition, the optofluidic lens can focus light at different off-axis positions on the focal plane with Δx′ < 6.8 μm and at opposite transverse positions with |Δy − Δy′| < 5.7 μm. This is the first demonstration of a special optofluidic lens that significantly reduces both the spherical and field curvature aberrations, which enhances the focusing power and facilitates multiple light source illumination using a single lens. It is anticipated to have high potential for applications such as on-chip light manipulation, sample illumination and multiplexed detection.

Graphical abstract: Optofluidic lens with low spherical and low field curvature aberrations

  • This article is part of the themed collection: Optofluidics

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Article information

Article type
Paper
Submitted
02 mar. 2016
Accepted
21 mar. 2016
First published
21 mar. 2016

Lab Chip, 2016,16, 1617-1624

Optofluidic lens with low spherical and low field curvature aberrations

H. T. Zhao, Y. Yang, L. K. Chin, H. F. Chen, W. M. Zhu, J. B. Zhang, P. H. Yap, B. Liedberg, K. Wang, G. Wang, W. Ser and A. Q. Liu, Lab Chip, 2016, 16, 1617 DOI: 10.1039/C6LC00295A

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