Transmittance of long-wavelength infrared surface plasmon by hexagonal periodic metal hole arrays

Byungwoo Lee; Hoe Min Kwak; Ha Sul Kim

doi:10.1117/12.2213855

4 March 2016 Transmittance of long-wavelength infrared surface plasmon by hexagonal periodic metal hole arrays

Byungwoo Lee, Hoe Min Kwak, Ha Sul Kim

Proceedings Volume 9742, Physics and Simulation of Optoelectronic Devices XXIV; 97421E (2016) https://doi.org/10.1117/12.2213855
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

For long wave length infrared transmission, a surface plasmonic device, having the periodic subwavelength metal hole array on Si substrate, was fabricated using photo-lithography and electron beam evaporation. The maximum transmitted wavelength was adjustable arbitrarily as a function of the period hole arrays. The maximum transmittance was measured 70.3% at 15.4 μm with a plasmonic device composed of a pitch of 5 μm and hole arrays of 3 μm. When the hole size became larger than a half pitch of the hole array, the transmitted infrared spectrum was split into two peaks. The surface plasmon mode of the six degenerated (1,0) Ag/Si was split from three to five modes depending on the incident beam angle. The blue and red wavelength shifts were measured at the same time.

Citation Download Citation

Byungwoo Lee, Hoe Min Kwak, and Ha Sul Kim "Transmittance of long-wavelength infrared surface plasmon by hexagonal periodic metal hole arrays", Proc. SPIE 9742, Physics and Simulation of Optoelectronic Devices XXIV, 97421E (4 March 2016); https://doi.org/10.1117/12.2213855

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