What is it about?
This paper reports the first derived thermo-optical properties for vacuum deposited infrared thin films embedded in multilayers.
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Why is it important?
Embedded ZnSe films showed thermo-optical properties similar to reported bulk values, whilst the embedded PbTe films of lower optical density, deviate from reference literature sources.
Perspectives
Detailed knowledge of derived coefficients is essential to the multilayer design of temperature-invariant narrow bandpass filters for use in non-cooled infrared detection systems. We further present manufacture of the first reported temperature-invariant multi-cavity narrow bandpass filter utilizing PbS chalcogenide layer material.
Dr Gary J Hawkins
University of Reading
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This page is a summary of: Determination of the embedded thermo-optical expansion coefficients of PbTe and ZnSe thin film infrared multilayers, Optics Express, June 2015, Optical Society of America (OSA),
DOI: 10.1364/oe.23.016348.
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