Thermal Properties of Whispering Gallery Mode Resonators

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 22, 2014
Accession Number
ADA622162

Entities

People

  • Lan Yang

Organizations

  • Washington University in St. Louis

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Analyzers
  • Detection
  • Detectors
  • Frequency
  • Frequency Response
  • Heat Capacity
  • Heat Energy
  • Heat Transfer
  • Infrared Detectors
  • Materials
  • Mathematics
  • Radiation
  • Refractive Index
  • Relaxation Time
  • Standards
  • Thermal Conductivity
  • Thermal Properties

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Thermal Physics or Thermal Science.