Title :
Dynamic tunabality of the electric dipole resonance in highly photo-excited metamaterials
Author :
Chatzakis, Ioannis ; Luo, Liang ; Wang, Jigang ; Shen, Nian Hai ; Koscny, Thomas ; Soukoulis, Costas M.
Author_Institution :
Dept. of Phys. & Astron., Iowa State Univ., Ames, IA, USA
Abstract :
Using optical-pump THz-probe spectroscopy, we observe a non-monotonic variation in the electric dipole oscillator strength as function of excitation fluence, revealing particularly, a partial recovery of the oscillator in highly-excited metamaterials for the first time.
Keywords :
electric moments; high-speed optical techniques; metamaterials; optical pumping; oscillator strengths; terahertz wave spectra; dynamic tunability; electric dipole oscillator strength; electric dipole resonance; excitation fluence; highly photoexcited metamaterials; nonmonotonic variation; optical-pump terahertz-probe spectroscopy; Laser beams; Laser excitation; Magnetic materials; Metamaterials; Optical pulses; Oscillators; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
