Abstract
A subwavelength spiral hyperlens that is able to image beyond the diffraction limit is studied. The spiral hyperlens is made from an anisotropic metamaterial with a hyperbolic dispersion relation in which the evanescent wave is converted into a propagating wave. Therefore, the propagating wave can be processed by conventional optical systems outside of the spiral hyperlens. The possibility of using a cylindrical hyperlens for overcoming the diffraction limit has been proven analytically and experimentally. In this study, we designed two types of spiral hyperlenses composed of a spiral periodic stack of silver and alumina multilayers. A spiral hyperlens utilizes the spiral geometry to magnify the objects. In comparison with a cylindrical hyperlens, a spiral hyperlens has improved performance in terms of higher image resolution and better image magnifications. Numerical simulations illustrate that the far-field imaging resolution of cylindrical spiral hyperlens is no greater than 110 nm at 365 nm working wavelength.
| Original language | English |
|---|---|
| Pages (from-to) | 1029-1034 |
| Number of pages | 6 |
| Journal | Journal of Modern Optics |
| Volume | 63 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2016 Jun 16 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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Spiral hyperlens with enhancements of image resolution and magnification. / Chen, Yi An; Chang, I-Ling; Chen, Lien-Wen.
In: Journal of Modern Optics, Vol. 63, No. 11, 16.06.2016, p. 1029-1034.Research output: Contribution to journal › Article
TY - JOUR
T1 - Spiral hyperlens with enhancements of image resolution and magnification
AU - Chen, Yi An
AU - Chang, I-Ling
AU - Chen, Lien-Wen
PY - 2016/6/16
Y1 - 2016/6/16
N2 - A subwavelength spiral hyperlens that is able to image beyond the diffraction limit is studied. The spiral hyperlens is made from an anisotropic metamaterial with a hyperbolic dispersion relation in which the evanescent wave is converted into a propagating wave. Therefore, the propagating wave can be processed by conventional optical systems outside of the spiral hyperlens. The possibility of using a cylindrical hyperlens for overcoming the diffraction limit has been proven analytically and experimentally. In this study, we designed two types of spiral hyperlenses composed of a spiral periodic stack of silver and alumina multilayers. A spiral hyperlens utilizes the spiral geometry to magnify the objects. In comparison with a cylindrical hyperlens, a spiral hyperlens has improved performance in terms of higher image resolution and better image magnifications. Numerical simulations illustrate that the far-field imaging resolution of cylindrical spiral hyperlens is no greater than 110 nm at 365 nm working wavelength.
AB - A subwavelength spiral hyperlens that is able to image beyond the diffraction limit is studied. The spiral hyperlens is made from an anisotropic metamaterial with a hyperbolic dispersion relation in which the evanescent wave is converted into a propagating wave. Therefore, the propagating wave can be processed by conventional optical systems outside of the spiral hyperlens. The possibility of using a cylindrical hyperlens for overcoming the diffraction limit has been proven analytically and experimentally. In this study, we designed two types of spiral hyperlenses composed of a spiral periodic stack of silver and alumina multilayers. A spiral hyperlens utilizes the spiral geometry to magnify the objects. In comparison with a cylindrical hyperlens, a spiral hyperlens has improved performance in terms of higher image resolution and better image magnifications. Numerical simulations illustrate that the far-field imaging resolution of cylindrical spiral hyperlens is no greater than 110 nm at 365 nm working wavelength.
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U2 - 10.1080/09500340.2015.1117670
DO - 10.1080/09500340.2015.1117670
M3 - Article
VL - 63
SP - 1029
EP - 1034
JO - Journal of Modern Optics
JF - Journal of Modern Optics
SN - 0950-0340
IS - 11
ER -