Micropatterned multilayer dielectric filters with two spectral characteristics

Marcus Frank; Uwe B. Schallenberg; Norbert Kaiser

doi:10.1117/1.601241

1 April 1997 Micropatterned multilayer dielectric filters with two spectral characteristics

Marcus Frank, Uwe B. Schallenberg, Norbert Kaiser

Optical Engineering, Vol. 36, Issue 4, (April 1997). https://doi.org/10.1117/1.601241

Micropatterned interference filters are developed by dry etching of dielectric multilayer stacks. The application of reactive-ion etching (RIE) techniques combined with the use of an etchstop layer are shown to be quite effective in producing two-stage micropatterns with defined spectral properties. By using a MgF2 underlayer the etching of TiO2 and SiO2 layers is stopped exactly, which provides the possibility to develop large area patterns (>1×1 cm2) with feature sizes as small as 10 mm. The distortion of edge features is shown to be better than 1 ?m. A filter array was developed providing high-reflection and antireflection coatings within a period of 20 ?m.

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Marcus Frank, Uwe B. Schallenberg, and Norbert Kaiser "Micropatterned multilayer dielectric filters with two spectral characteristics," Optical Engineering 36(4), (1 April 1997). https://doi.org/10.1117/1.601241

Published: 1 April 1997

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