Band pass filters in the 1 μm spectral region: Thick metal screens

Document Type

Article

Publication Date

1-1-2008

Abstract

Free standing metal screens have long been used as band pass filters in the infrared (IR) wavelength region. One adjusts the screens' periodicity constant, its opening-to-periodicity aspect ratio and its thickness to achieve desired infrared transmission properties. Here we concentrate on thick screens in the near IR wavelength region (1-2 μm). In addition to experiments and simulations we have considered the role of screen imperfection on its transmission characteristics. Uneven surfaces, inclined and sometimes rough walls of the screen and waveguide channels may be the result of thick-film lithography which is used in the process for screen manufacturing. Understanding these effects is crucial to applications of these filters in the entire IR region. © 2007 Elsevier B.V. All rights reserved.

Identifier

37449009217 (Scopus)

Publication Title

Infrared Physics and Technology

External Full Text Location

https://doi.org/10.1016/j.infrared.2007.07.007

ISSN

13504495

First Page

178

Last Page

185

Issue

3

Volume

51

Grant

IIS 0552155

Fund Ref

National Science Foundation

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