Electrically Conductive And Infrared Transparent Thin Metal Film Coatings

Bright, Clark I.

doi:10.1117/12.939557

Cited by 2 publications

(1 citation statement)

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“…Much work has been made to develop a single-channel bandpass filter, so most of these filters working in visible and near infrared could be bought easily in the market [10][11][12][13]. The 3-5 µm area is an important window in the infrared band, and it has important application significance in the military [14,15]. In this band, however, less work has been made to fabricate multi-channel narrow-band filter on a whole substrate.…”

Section: Introductionmentioning

confidence: 99%

Design and Preparation of a 6-Channel Fan-Shaped Integrated Narrow-Band Filter in the Mid-Infrared Band

et al. 2019

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A six-channel fan-shaped integrated narrow-band filter on a silicon substrate was designed on the basis of the Fabray–Perot (FP) theory and was fabricated using e-beam thermal evaporation. The central wavelength was modulated by modifying the FP cavity thickness using the combination mask method. Germanium and zinc sulfide were selected as the high and low refractive index film materials, respectively. Its average peak transmission reached 83.3%, the cut-off transmittance was less than 1%, and the full width at half maximum (FWHM) changed from 55 and 94 nm, and the central wavelength positioning accuracy error was less than 0.35%. Furthermore, transmittance was also calculated inversely, using the thickness of each layer of films, in order to deduce the reason of the decrease in peak transmittance. Thickness deviation of each layer and interface scattering contributed to the decrease of peak transmittance. Compared with the same type of products in the market, our filter showed better properties than that of some published and commercial filter.

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Section: Introductionmentioning

confidence: 99%