Spatial focusing of surface polaritons based on cross-phase modulation
We theoretically study the spatial focusing of surface polaritons (SPs) in a negative index metamaterial-atomic gas interface waveguide system, based on cross phase modulation (XPM) in a tripod type double electromagnetically induced transparency (EIT) scheme. In the linear region, we realize the lo...
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doaj-b7b826bf5c8d4e2bbb16c499d97177472021-07-15T04:27:29ZengElsevierResults in Physics2211-37972021-08-0127104531Spatial focusing of surface polaritons based on cross-phase modulationChaohua Tan0Na Li1Datang Xu2Zhiming Chen3School of Physics and Electronics, Shandong Normal University, Jinan 250014, China; Corresponding author.School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaSchool of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215500, ChinaSchool of Science, East China University of Technology, Nanchang 330013, Jiangxi, ChinaWe theoretically study the spatial focusing of surface polaritons (SPs) in a negative index metamaterial-atomic gas interface waveguide system, based on cross phase modulation (XPM) in a tripod type double electromagnetically induced transparency (EIT) scheme. In the linear region, we realize the low-loss stable propagation of SPs, and the group velocities of the probe and signal fields are well matched via double EIT. In the nonlinear region, we show that giant enhancement of the XPM can be obtained. Using a narrow optical soliton in free space, we realize spatial focusing of the SPs solitons, including bright, multi bright, and gray solitons. The full width at the half-maximum of the SPs soliton can be compressed to about ten nanometers, thus, even nanofocusing can be obtained. The results obtained her e have certain theoretical significance for nano-scale sensing, spectral enhancement and precision measurement.http://www.sciencedirect.com/science/article/pii/S2211379721006379Electromagnetically induced transparencySurface polaritons solitonsCross phase modulationNanofocusing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chaohua Tan Na Li Datang Xu Zhiming Chen |
spellingShingle |
Chaohua Tan Na Li Datang Xu Zhiming Chen Spatial focusing of surface polaritons based on cross-phase modulation Results in Physics Electromagnetically induced transparency Surface polaritons solitons Cross phase modulation Nanofocusing |
author_facet |
Chaohua Tan Na Li Datang Xu Zhiming Chen |
author_sort |
Chaohua Tan |
title |
Spatial focusing of surface polaritons based on cross-phase modulation |
title_short |
Spatial focusing of surface polaritons based on cross-phase modulation |
title_full |
Spatial focusing of surface polaritons based on cross-phase modulation |
title_fullStr |
Spatial focusing of surface polaritons based on cross-phase modulation |
title_full_unstemmed |
Spatial focusing of surface polaritons based on cross-phase modulation |
title_sort |
spatial focusing of surface polaritons based on cross-phase modulation |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2021-08-01 |
description |
We theoretically study the spatial focusing of surface polaritons (SPs) in a negative index metamaterial-atomic gas interface waveguide system, based on cross phase modulation (XPM) in a tripod type double electromagnetically induced transparency (EIT) scheme. In the linear region, we realize the low-loss stable propagation of SPs, and the group velocities of the probe and signal fields are well matched via double EIT. In the nonlinear region, we show that giant enhancement of the XPM can be obtained. Using a narrow optical soliton in free space, we realize spatial focusing of the SPs solitons, including bright, multi bright, and gray solitons. The full width at the half-maximum of the SPs soliton can be compressed to about ten nanometers, thus, even nanofocusing can be obtained. The results obtained her e have certain theoretical significance for nano-scale sensing, spectral enhancement and precision measurement. |
topic |
Electromagnetically induced transparency Surface polaritons solitons Cross phase modulation Nanofocusing |
url |
http://www.sciencedirect.com/science/article/pii/S2211379721006379 |
work_keys_str_mv |
AT chaohuatan spatialfocusingofsurfacepolaritonsbasedoncrossphasemodulation AT nali spatialfocusingofsurfacepolaritonsbasedoncrossphasemodulation AT datangxu spatialfocusingofsurfacepolaritonsbasedoncrossphasemodulation AT zhimingchen spatialfocusingofsurfacepolaritonsbasedoncrossphasemodulation |
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1721301915130658816 |