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Optical performance of frequency-selective bolometers.

T A Perera1, T P Downes, S S Meyer

  • 1Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA. perera@astro.umass.edu

Applied Optics
|October 28, 2006
PubMed
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Frequency-selective bolometers (FSBs) offer a compact way to detect specific millimeter wavelengths. These new detectors show high absorption efficiency and transparency, promising advancements in telescope technology.

Area of Science:

  • Astronomy and Astrophysics
  • Detector Physics

Background:

  • Millimeter and submillimeter astronomy require sensitive detectors.
  • Current detectors may have limitations in spectral selectivity and signal loss.

Purpose of the Study:

  • To introduce and evaluate a new type of detector: frequency-selective bolometers (FSBs).
  • To assess the performance of FSBs for millimeter and submillimeter wavelength applications.

Main Methods:

  • Fabrication and testing of prototype frequency-selective bolometers.
  • Modeling and analysis of FSB absorption spectra and transmission properties.

Main Results:

  • FSB absorption spectra align well with theoretical models.
  • Peak absolute absorption efficiencies approaching 50% were achieved.

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  • High out-of-band transmission was demonstrated.

    • Conclusions:

    • Frequency-selective bolometers are a promising technology for spectral selection in millimeter/submillimeter astronomy.
    • Stacked FSBs provide a low-loss, compact method for efficient light utilization in telescopes.