Third-harmonic generation from arrays of sub-wavelength metal apertures.

We measure third-harmonic generation (THG) from arrays of sub-wavelength metal apertures in transmission using fundamental input at 800 nm. Samples with different aperture spacings, sizes, and shapes are used. Strong angular dependence of THG is observed, with maxima located at incidence angles corresponding to extraordinary optical transmission (EOT) for the fundamental. We demonstrate an anomalous scaling of TH intensity with aperture size, where at different EOT peaks, the TH may either increase or decrease with aperture size. The aperture shape is also shown to have a strong effect on TH output.

[1]  S Enoch,et al.  Strong modification of the nonlinear optical response of metallic subwavelength hole arrays. , 2006, Physical review letters.

[2]  O. Martin,et al.  Resonant Optical Antennas , 2005, Science.

[3]  Reuven Gordon,et al.  Enhanced second harmonic generation from nanoscale double-hole arrays in a gold film , 2006 .

[4]  LETTER TO THE EDITOR: Strong second-harmonic radiation from a thin silver film with randomly distributed small holes , 2003 .

[5]  Ajay Nahata,et al.  Enhanced nonlinear optical conversion from a periodically nanostructured metal film. , 2003, Optics letters.

[6]  X. Jiao,et al.  Second-harmonic emission from sub-wavelength apertures: Effects of aperture symmetry and lattice arrangement. , 2007, Optics express.

[7]  Kevin J. Malloy,et al.  Second harmonic generation from a nanopatterned isotropic nonlinear material , 2006 .

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

[9]  A. Zayats,et al.  Near-field distribution of optical transmission of periodic subwavelength holes in a metal film. , 2001, Physical review letters.

[10]  Steve Blair,et al.  Fluorescence enhancement from an array of subwavelength metal apertures. , 2003, Optics letters.

[11]  T. Ebbesen,et al.  Crucial role of the adhesion layer on the plasmonic fluorescence enhancement. , 2009, ACS nano.

[12]  In-Yong Park,et al.  High-harmonic generation by resonant plasmon field enhancement , 2008, Nature.

[13]  Hervé Rigneault,et al.  Field enhancement in single subwavelength apertures. , 2006, Journal of the Optical Society of America. A, Optics, image science, and vision.

[14]  R. Gordon,et al.  Apex-enhanced second-harmonic generation by using double-hole arrays in a gold film , 2007 .

[15]  Steve Blair,et al.  Second-harmonic generation from an array of sub-wavelength metal apertures , 2005 .