Performance of uncooled microcantilever thermal detectors

P. G. Datskos, S. Rajic, N. V. Lavrik

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Bimaterial microcantilevers arranged into focal plane arrays (FPAs) can function as uncooled IR imaging devices. In order to analyze the performance of such devices and compare various FPAs, it is essential to have an in-depth understanding of their operation, figures of merit, and fundamental limitations. We give an overview of figures of merit that are applicable to both cooled and uncooled IR detectors. Specific focus of this chapter is a performance analysis for microcantilever IR detectors with an optical readout. We discuss responsivity of microcantilever IR detectors and analyze the different sources (and mechanisms) of noise present in them. A model SiNx microcantilever device with an Al layer in the bimaterial region was fabricated and its performance as an IR detector was analyzed.

Original languageEnglish
Article number17
Pages (from-to)136-150
Number of pages15
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume5721
DOIs
StatePublished - 2005
EventMOEMS Display and Imaging Systems III - San Jose, CA, United States
Duration: Jan 24 2005Jan 25 2005

Keywords

  • Focal place array
  • IR detector
  • MEMS
  • NETD
  • Noise
  • Responsivity
  • Thermal detector
  • Thermal isolation

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