Determination of the embedded thermo-optical expansion coefficients of PbTe and ZnSe thin film infrared multilayers

  • Gary J. Hawkins, Thomine Stolberg-Rohr
  • Optics Express, June 2015, Optical Society of America (OSA)
  • DOI: 10.1364/oe.23.016348

Thermo-optical properties of infrared multilayers

What is it about?

This paper reports the first derived thermo-optical properties for vacuum deposited infrared thin films embedded in multilayers.

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.


Dr Gary J Hawkins
University of Reading

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.

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The following have contributed to this page: Dr Gary J Hawkins