Accession Number:

ADA622162

Title:

Thermal Properties of Whispering Gallery Mode Resonators

Descriptive Note:

Final rept. 1 Sep 2011-31 Aug 2014

Corporate Author:

WASHINGTON UNIV ST LOUIS MO

Personal Author(s):

Report Date:

2014-12-22

Pagination or Media Count:

32.0

Abstract:

In this project, we studied the thermal properties of ultra-high-quality whispering-gallery-mode microtoroid resonators. More specifically, we measured the thermal relaxation time of the resonator to estimate the response time of the resonator based infrared IR detector. We found that, depending on the size of the silicon pillar, thermal relaxation time of the resonators can vary from a few hundred micro-seconds to a few milli-seconds. We also characterized the performance of a microtoroid IR detector by measuring its response to an IR radiation source. By varying the illumination conditions and modulation frequency of the IR source, we characterized the IR sensitivity and the response bandwidth of the silica microtoroids. Our results show that high-quality WGM microtoroid resonators have the potential to compete with the state-of-the-art microbolometer detectors.

Subject Categories:

  • Electrical and Electronic Equipment
  • Infrared Detection and Detectors
  • Fiber Optics and Integrated Optics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE