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Title: Active control of chirality in nonlinear metamaterials

Abstract

An all-optical tunabe chirality is realized in a photonic metamaterial, the metamolecule of which consists of a nonlinear nano-Au:polycrystalline indium-tin oxide layer sandwiched between two L-shaped gold nano-antennas twisted 90° with each other. The maximum circular dichroism reached 30%. Under excitation of a 40 kW/cm{sup 2} weak pump light, the peak in the circular dichroism shifts 45 nm in the short-wavelength direction. An ultrafast response time of 35 ps is maintained. This work not only opens up the possibility for the realization of ultralow-power and ultrafast all-optical tunable chirality but also offers a way to construct ultrahigh-speed on-chip biochemical sensors.

Authors:
; ;  [1]; ;  [1];  [2]
  1. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22412744
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTENNAS; CHIRALITY; DICHROISM; EXCITATION; GOLD; INDIUM COMPOUNDS; LAYERS; METAMATERIALS; NONLINEAR PROBLEMS; POLYCRYSTALS; SENSORS; TIN OXIDES; VISIBLE RADIATION

Citation Formats

Zhu, Yu, Chai, Zhen, Yang, Hong, Hu, Xiaoyong, E-mail: xiaoyonghu@pku.edu.cn, Gong, Qihuang, and Collaborative Innovation Center of Quantum Matter, Beijing 100871. Active control of chirality in nonlinear metamaterials. United States: N. p., 2015. Web. doi:10.1063/1.4914343.
Zhu, Yu, Chai, Zhen, Yang, Hong, Hu, Xiaoyong, E-mail: xiaoyonghu@pku.edu.cn, Gong, Qihuang, & Collaborative Innovation Center of Quantum Matter, Beijing 100871. Active control of chirality in nonlinear metamaterials. United States. doi:10.1063/1.4914343.
Zhu, Yu, Chai, Zhen, Yang, Hong, Hu, Xiaoyong, E-mail: xiaoyonghu@pku.edu.cn, Gong, Qihuang, and Collaborative Innovation Center of Quantum Matter, Beijing 100871. 2015. "Active control of chirality in nonlinear metamaterials". United States. doi:10.1063/1.4914343.
@article{osti_22412744,
title = {Active control of chirality in nonlinear metamaterials},
author = {Zhu, Yu and Chai, Zhen and Yang, Hong and Hu, Xiaoyong, E-mail: xiaoyonghu@pku.edu.cn and Gong, Qihuang and Collaborative Innovation Center of Quantum Matter, Beijing 100871},
abstractNote = {An all-optical tunabe chirality is realized in a photonic metamaterial, the metamolecule of which consists of a nonlinear nano-Au:polycrystalline indium-tin oxide layer sandwiched between two L-shaped gold nano-antennas twisted 90° with each other. The maximum circular dichroism reached 30%. Under excitation of a 40 kW/cm{sup 2} weak pump light, the peak in the circular dichroism shifts 45 nm in the short-wavelength direction. An ultrafast response time of 35 ps is maintained. This work not only opens up the possibility for the realization of ultralow-power and ultrafast all-optical tunable chirality but also offers a way to construct ultrahigh-speed on-chip biochemical sensors.},
doi = {10.1063/1.4914343},
journal = {Applied Physics Letters},
number = 9,
volume = 106,
place = {United States},
year = 2015,
month = 3
}
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