Enhanced Transmission of Higher Order Plasmon Modes With Random Au Nanoparticles in Periodic Hole Arrays

The enhanced transmission of higher order plasmon modes with random gold nanoparticles embedded in periodic hole arrays using asymmetric pair aperture as a unit is investigated in the midinfrared regime. Different thicknesses of gold film were deposited inside holes and then annealed to form randomly sized and distributed nanoparticles. The holes deposited with thin gold film exhibit significantly enhanced transmission in higher order modes after thermal annealing. The enormous local electric field around the nanoparticles enhances the scattering effect that contributes to the enhanced infrared transmission. This unique design, which integrates localized and propagating surface plasmons, provides an easy way for midinfrared applications in need of enhanced transmission in higher order modes.

[1]  Zhaoguang Pang,et al.  Random laser based on waveguided plasmonic gain channels. , 2011, Nano letters.

[2]  Si‐Chen Lee,et al.  Effect of Paired Apertures in a Periodic Hole Array on Higher Order Plasmon Modes , 2012, IEEE Photonics Technology Letters.

[3]  Si‐Chen Lee,et al.  Extraordinary transmission through a silver film perforated with bowtie-shaped aperture array in midinfrared region , 2011 .

[4]  Brian K. Canfield,et al.  Polarization effects in the linear and nonlinear optical responses of gold nanoparticle arrays , 2005 .

[5]  J. Hafner,et al.  Optical properties of star-shaped gold nanoparticles. , 2006, Nano letters.

[6]  Takeshi Fujita,et al.  Surface enhanced Raman scattering of nanoporous gold: Smaller pore sizes stronger enhancements , 2007 .

[7]  Gilbert C Walker,et al.  Composite nanoparticle nanoslit arrays: a novel platform for LSPR mediated subwavelength optical transmission. , 2010, Optics express.

[8]  T. Zhai,et al.  Hybrid metallic photonic crystals with higher-order coupling processes , 2011 .

[9]  Si‐Chen Lee,et al.  Observation of Fabry-Pérot-type surface plasmon on Ag film with perforated short-range 3×3 hole array arranged in long-range periodic structure , 2007 .

[10]  T. Ebbesen,et al.  Extraordinary optical transmission with tapered slits: effect of higher diffraction and slit resonance orders , 2012 .

[11]  Si‐Chen Lee,et al.  Emission properties of Ag/dielectric/Ag plasmonic thermal emitter with different lattice type, hole shape, and dielectric material , 2009 .

[12]  W. Lu,et al.  Coupling of localized surface plasmon modes in compound structure with metallic nanoparticle and nanohole arrays , 2010 .

[13]  Ajay Agarwal,et al.  Development of highly reproducible nanogap SERS substrates: comparative performance analysis and its application for glucose sensing. , 2011, Biosensors & bioelectronics.

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