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This article is cited in 3 scientific papers (total in 3 papers)
OPTO-IT
Sharp focusing of light using a planar gradient microlens
A. G. Nalimovab, V. V. Kotlyarab a Samara State Aerospace University, Samara, Russia
b Image Processing Systems Institute, Russian Academy of Sciences, Samara, Russia
Abstract:
It is shown numerically that using planar gradient microlenses, the coherent radiation can be focused in a narrow line of width $\lambda/38$ and length $\lambda/5.5$. The efficiency of focusing is $22\%$. A slitted photonic-crystal lens retains the properties of sharp focusing of light characteristic of a gradient lens. Substitution of the gradient lens by a photonic-crystal analogue synthesized in a silicon was found not to degrade the characteristics of the lens substantially. In this case, we observed a
reduction of side lobes near the focal spot and a $30.2\%$ increase of the focusing efficiency.
Keywords:
planar lens, photonic crystal, sharp focusing.
Received: 22.01.2016 Revised: 15.02.2016
Citation:
A. G. Nalimov, V. V. Kotlyar, “Sharp focusing of light using a planar gradient microlens”, Computer Optics, 40:2 (2016), 135–140
Linking options:
https://www.mathnet.ru/eng/co124 https://www.mathnet.ru/eng/co/v40/i2/p135
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Abstract page: | 219 | Full-text PDF : | 64 | References: | 25 |
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