Abstract
The single defect structure of a two-dimensional graded index photonic crystal (PC) is investigated. By introduction of an air hole located at center of the photonic crystalbased lenses, we can obtain an extremely small focusing spot, sited at full-width and half maximum (FWHM) as fine as λ/75, which is positioned at the subsurface and top surface of the PCs respectively. Computational calculations were performed on the basis of finitedifferent time-domain (FDTD) algorithm for the purpose of verifying the feasibility of our design. To study influence of the defect on nanofocusing property of the PC lenses, we set different length of the air holes at center of the PC lenses. The influence of wavelength and material on the nanofocusing performance of the PC lenses is discussed. New applications in optoelectronic devices, nanometrology, bioimaging, and biosensing from the graded index of PC lenses is possible.
| Original language | English |
|---|---|
| Pages (from-to) | 2628-2636 |
| Number of pages | 9 |
| Journal | Optical Materials Express |
| Volume | 6 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2016 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
Cite this
Ultra-sharp nanofocusing of graded index photonic crystal-based lenses perforated with optimized single defect. / Li, Y. H.; Fu, Y. Q.; Minin, Oleg V.; Minin, I. V.
In: Optical Materials Express, Vol. 6, No. 8, 2016, p. 2628-2636.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultra-sharp nanofocusing of graded index photonic crystal-based lenses perforated with optimized single defect
AU - Li, Y. H.
AU - Fu, Y. Q.
AU - Minin, Oleg V.
AU - Minin, I. V.
PY - 2016
Y1 - 2016
N2 - The single defect structure of a two-dimensional graded index photonic crystal (PC) is investigated. By introduction of an air hole located at center of the photonic crystalbased lenses, we can obtain an extremely small focusing spot, sited at full-width and half maximum (FWHM) as fine as λ/75, which is positioned at the subsurface and top surface of the PCs respectively. Computational calculations were performed on the basis of finitedifferent time-domain (FDTD) algorithm for the purpose of verifying the feasibility of our design. To study influence of the defect on nanofocusing property of the PC lenses, we set different length of the air holes at center of the PC lenses. The influence of wavelength and material on the nanofocusing performance of the PC lenses is discussed. New applications in optoelectronic devices, nanometrology, bioimaging, and biosensing from the graded index of PC lenses is possible.
AB - The single defect structure of a two-dimensional graded index photonic crystal (PC) is investigated. By introduction of an air hole located at center of the photonic crystalbased lenses, we can obtain an extremely small focusing spot, sited at full-width and half maximum (FWHM) as fine as λ/75, which is positioned at the subsurface and top surface of the PCs respectively. Computational calculations were performed on the basis of finitedifferent time-domain (FDTD) algorithm for the purpose of verifying the feasibility of our design. To study influence of the defect on nanofocusing property of the PC lenses, we set different length of the air holes at center of the PC lenses. The influence of wavelength and material on the nanofocusing performance of the PC lenses is discussed. New applications in optoelectronic devices, nanometrology, bioimaging, and biosensing from the graded index of PC lenses is possible.
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UR - http://www.scopus.com/inward/citedby.url?scp=84983643628&partnerID=8YFLogxK
U2 - 10.1364/OME.6.002628
DO - 10.1364/OME.6.002628
M3 - Article
VL - 6
SP - 2628
EP - 2636
JO - Optical Materials Express
JF - Optical Materials Express
SN - 2159-3930
IS - 8
ER -