Reduction of light reflection at silicon-plate surfaces by means of subwavelength gratings in the terahertz region: errata

Kuroo, Shin-ichi; Oyama, Satoshi; Shiraishi, Kazuyuki; Sasho, Hiroyuki; Fukushima, Kazushiro

doi:10.1364/ao.50.002255

Appl. Opt.

2011

DOI: 10.1364/ao.50.002255

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Reduction of light reflection at silicon-plate surfaces by means of subwavelength gratings in the terahertz region: errata

Shin-ichi Kuroo

Satoshi Oyama

Kazuyuki Shiraishi

et al.

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Infrared polarizer employing multiple metal-film subwavelength gratings

Shiraishi¹,

Yoda²

2013

Opt. Express

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A multiple thin metal-film subwavelength grating is proposed for polarizers in the infrared wavelength region of 10-20 μm. The dependence of the transmission characteristics of the polarizers on structural parameters was obtained numerically, and the potential for high performance was confirmed experimentally. The measured TE-wave losses in a polarizer comprising a triangular triple Al-film grating are more than 45 and 35 dB for the wavelength ranges of 10-16 and 16-20 μm, respectively, while the net TM-wave losses are lower than 1.5 dB in the wavelength rage of 15-20 μm.

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Infrared polarizer employing multiple metal-film subwavelength gratings

Shiraishi¹,

Yoda²

2013

Opt. Express

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Silver-film subwavelength gratings for polarizers in the terahertz and mid-infrared regions

et al. 2016

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Silver is proposed as a useful metal for thin metal-film subwavelength-grating polarizers in both the terahertz and mid-infrared regions. A triangular Ag-film grating for a terahertz-region polarizer fabricated on a resin substrate showed measured TE-wave losses of higher than 45 dB in the frequency range of 0.5-2.2 THz, while TM-wave losses were lower than 0.75 dB in the range of 0.5-3THz. A triangular double Ag-film grating structure on a thin silicon substrate with an anti-reflection layer on its reverse side was fabricated for the polarizer in the mid-infrared region. Measured TE-wave losses were higher than 27 dB in the wavelength range of 16-21 μm, while the minimum TM-wave loss was 3.5 dB at around the wavelength of 19 μm. Silver films are confirmed to be promising candidates for fabricating high-performance polarizers in the terahertz and mid-infrared regions.

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Reduction of light reflection at silicon-plate surfaces by means of subwavelength gratings in the terahertz region: errata

Cited by 2 publications

References 1 publication

Infrared polarizer employing multiple metal-film subwavelength gratings

Infrared polarizer employing multiple metal-film subwavelength gratings

Silver-film subwavelength gratings for polarizers in the terahertz and mid-infrared regions

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