Prism-shaped hyperlens for subwavelength focusing of light

Ahmad Jalali Deel; Abbas Alighanbari

doi:10.1364/AO.440237

Applied Optics
Vol. 61,
Issue 2,
pp. 324-329
(2022)
•https://doi.org/10.1364/AO.440237

Prism-shaped hyperlens for subwavelength focusing of light

Ahmad Jalali Deel and Abbas Alighanbari

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Ahmad Jalali Deel and Abbas Alighanbari, "Prism-shaped hyperlens for subwavelength focusing of light," Appl. Opt. 61, 324-329 (2022)

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Table of Contents Category
- Optical Devices, Sensors, and Detectors
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The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: August 13, 2021
- Revised Manuscript: November 22, 2021
- Manuscript Accepted: November 24, 2021
- Published: January 3, 2022

Abstract

Subwavelength focusing of light is on-demand for overcoming the diffraction limit of light for applications such as photolithography. A prism-shaped hyperlens capable of focusing incident light to a subwavelength scale is proposed. The lens lifts the complexity of previous structures and achieves a spot size of about ${\lambda _0}/{4}$ at the free-space wavelength ${\lambda _0} = {365}\;{\rm nm}$. Another feature of the proposed lens is that it consists of planar input and output ports, which have been a design challenge for focusing lenses in recent years.

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$N_{t}$	$T_{l}$	Spot Size	FP	IL
5	130 nm	257 nm	0.43	3.2 dB
5	140 nm	194 nm	0.32	4 dB
5	150 nm	185 nm	0.31	4.3 dB
5	160 nm	179 nm	0.3	7 dB
5	170 nm	175 nm	0.29	10 dB
5	180 nm	183 nm	0.3	12 dB
10	130 nm	237 nm	0.4	3 dB
10	140 nm	174 nm	0.29	2.5 dB
10	150 nm	160 nm	0.27	4 dB
10	160 nm	166 nm	0.275	6.5 dB
10	170 nm	168 nm	0.28	10 dB
10	180 nm	169 nm	0.28	14 dB
15	130 nm	238 nm	0.395	6.5 dB
15	140 nm	176 nm	0.29	6.7 dB
15	150 nm	171 nm	0.285	8 dB
15	160 nm	175 nm	0.29	10.5 dB
15	170 nm	178 nm	0.295	14 dB
15	180 nm	185 nm	0.31	18 dB
20	130 nm	235 nm	0.39	7 dB
20	140 nm	183 nm	0.305	7 dB
20	150 nm	175 nm	0.29	8 dB
20	160 nm	175 nm	0.29	10 dB
20	170 nm	181 nm	0.3	14 dB
20	180 nm	190 nm	0.315	18 dB

Lens Type	FP	IL (dB)	Topology
[21]	0.02	29.5(estimated)	Complex
[22]	0.125	Not reported	Conical
[2]	0.32	23 (reported)	Cylindrical
[3]	0.26	Not reported	Cylindrical
[24]	0.15	8.5 (estimated)	Planar
[25]	0.16	12 (estimated)	Planar
Proposed lens $T_{l} = 150 n m$ $N_{t} = 10$	0.27	4	Semi- Planar

$N_{t}$	$T_{l}$	Spot Size	FP	IL
5	130 nm	257 nm	0.43	3.2 dB
5	140 nm	194 nm	0.32	4 dB
5	150 nm	185 nm	0.31	4.3 dB
5	160 nm	179 nm	0.3	7 dB
5	170 nm	175 nm	0.29	10 dB
5	180 nm	183 nm	0.3	12 dB
10	130 nm	237 nm	0.4	3 dB
10	140 nm	174 nm	0.29	2.5 dB
10	150 nm	160 nm	0.27	4 dB
10	160 nm	166 nm	0.275	6.5 dB
10	170 nm	168 nm	0.28	10 dB
10	180 nm	169 nm	0.28	14 dB
15	130 nm	238 nm	0.395	6.5 dB
15	140 nm	176 nm	0.29	6.7 dB
15	150 nm	171 nm	0.285	8 dB
15	160 nm	175 nm	0.29	10.5 dB
15	170 nm	178 nm	0.295	14 dB
15	180 nm	185 nm	0.31	18 dB
20	130 nm	235 nm	0.39	7 dB
20	140 nm	183 nm	0.305	7 dB
20	150 nm	175 nm	0.29	8 dB
20	160 nm	175 nm	0.29	10 dB
20	170 nm	181 nm	0.3	14 dB
20	180 nm	190 nm	0.315	18 dB

Lens Type	FP	IL (dB)	Topology
[21]	0.02	29.5(estimated)	Complex
[22]	0.125	Not reported	Conical
[2]	0.32	23 (reported)	Cylindrical
[3]	0.26	Not reported	Cylindrical
[24]	0.15	8.5 (estimated)	Planar
[25]	0.16	12 (estimated)	Planar
Proposed lens $T_{l} = 150 n m$ $N_{t} = 10$	0.27	4	Semi- Planar

Abstract

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Applied Optics