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Published December 21, 2009 | Published
Journal Article Open

Characterization of acceptance angles of small circular apertures

Abstract

We characterize the acceptance angles of small circular apertures for light collection by simulations and experimental measurements. By examining the full width half maximum acceptance angle as a function of the aperture size, we show that the acceptance angle of a circular aperture reaches a minimum of 67 deg before rebounding around the transition between single mode and multimode transmission (approximately 400 nm). This behavior can be explained by the change of mode-coupling efficiency during the transition from single mode to multimode propagation regime. This work in understanding of the behavior of light transmission through subwavelength apertures will guide the design of better aperture based imaging devices where apertures are used as light collection units.

Additional Information

© 2009 Optical Society of America. Received 26 Oct 2009; revised 9 Dec 2009; accepted 10 Dec 2009; published 15 Dec 2009. The authors thank Dr Meng Cui, Dr Jigang Wu, Dr Xin Heng and Dr Xiquan Cui for their helpful discussions. We also thank the meticulous reviewers for kindly pointing out the formatting and typographical errors in the draft of this paper and suggesting revisions benefiting the clarity of this manuscript. Ying Min Wang acknowledges support provided by the National Science Scholarship from the Agency of Science, Technology and Research (A*STAR), Singapore. This project is funded by Wallace Coulter Foundation and NIH R21EB008867.

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August 19, 2023
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October 19, 2023