Active control of chirality in nonlinear metamaterials
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 (China)
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.
- OSTI ID:
- 22412744
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ultralow-power all-optical tunable double plasmon-induced transparencies in nonlinear metamaterials
Chiral THz metamaterial with tunable optical activity
Chiral metamaterials with negative refractive index based on four “U” split ring resonators
Journal Article
·
Mon May 26 00:00:00 EDT 2014
· Applied Physics Letters
·
OSTI ID:22412744
+1 more
Chiral THz metamaterial with tunable optical activity
Conference
·
Fri Jan 01 00:00:00 EST 2010
·
OSTI ID:22412744
+3 more
Chiral metamaterials with negative refractive index based on four “U” split ring resonators
Journal Article
·
Mon Aug 23 00:00:00 EDT 2010
· Applied Physics Letters
·
OSTI ID:22412744
+6 more