Strong optical activity in chiral metamaterials of metal screw hole arrays

The authors demonstrate the change of the polarization of the electromagnetic wave induced by chiral metamaterials in the terahertz region. The polarization of the incident terahertz wave changes dramatically after transmitting through the chiral metamaterials made of the array of screw holes in metal slabs. A strong resonant polarization change (ellipticity and polarization azimuth) is observed at frequencies corresponding to the standing cavity modes of the metal waveguide with a finite length. Such experimental results indicate that the metal screw hole arrays work as a strong optically active material.

[1]  F. Miyamaru,et al.  Slab-thickness dependence of polarization change of terahertz waves transmitted through metal hole arrays , 2006 .

[2]  Konstantins Jefimovs,et al.  Giant optical activity in quasi-two-dimensional planar nanostructures. , 2005, Physical review letters.

[3]  Jill Elliott,et al.  Polarization control of optical transmission of a periodic array of elliptical nanoholes in a metal film. , 2004, Optics letters.

[4]  Konstantins Jefimovs,et al.  Optical activity in subwavelength-period arrays of chiral metallic particles , 2003 .

[5]  Willie J Padilla,et al.  Terahertz Magnetic Response from Artificial Materials , 2004, Science.

[6]  John,et al.  Strong localization of photons in certain disordered dielectric superlattices. , 1987, Physical review letters.

[7]  Masanori Hangyo,et al.  Polarization response of two-dimensional metallic photonic crystals studied by terahertz time-domain spectroscopy. , 2004, Applied optics.

[8]  Thomas W. Ebbesen,et al.  Fornel, Frédérique de , 2001 .

[9]  R. Shelby,et al.  Experimental Verification of a Negative Index of Refraction , 2001, Science.

[10]  K. Kavanagh,et al.  Strong polarization in the optical transmission through elliptical nanohole arrays. , 2004, Physical review letters.

[11]  H. Lezec,et al.  Extraordinary optical transmission through sub-wavelength hole arrays , 1998, Nature.

[12]  A. Yariv.  Optical electronics in modern communications , 1997 .

[13]  Masanori Hangyo,et al.  Finite size effect of transmission property for metal hole arrays in subterahertz region , 2004 .

[14]  J. Pendry,et al.  Magnetism from conductors and enhanced nonlinear phenomena , 1999 .

[15]  N. Zheludev,et al.  Optical manifestations of planar chirality. , 2003, Physical review letters.

[16]  Nathan Marcuvitz.  Waveguide Handbook , 1951 .

[17]  M. Wegener,et al.  Simultaneous Negative Phase and Group Velocity of Light in a Metamaterial , 2006, Science.

[18]  J. Pendry,et al.  Theory of extraordinary optical transmission through subwavelength hole arrays. , 2000, Physical review letters.

[19]  E. Yablonovitch,et al.  Inhibited spontaneous emission in solid-state physics and electronics. , 1987, Physical review letters.

[20]  Masaya Notomi,et al.  Negative refraction in photonic crystals , 2002 .

[21]  T. Kondo,et al.  Large polarization change in two-dimensional metallic photonic crystals in subterahertz region , 2003 .