Infrared light detection using a whispering-gallery-mode optical microcavity
Abstract
We demonstrate a thermal infrared (IR) detector based on an ultra-high-quality-factor (Q) whispering-gallery-mode (WGM) microtoroidal silica resonator and investigate its performance to detect IR radiation at 10 μm wavelength. The bandwidth and the sensitivity of the detector are dependent on the power of a probe laser and the detuning between the probe laser and the resonance frequency of the resonator. The microtoroid IR sensor achieved a noise-equivalent-power (NEP) of 7.46 nW, corresponding to an IR intensity of 0.095 mW/cm2.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 28, 2014
- Source ID
- 10.1063/1.4874652
Entities
People
- Jiangang Zhu
- Lan Yang
- Şahin Kaya Özdemir
Organizations
- Army Research Office
- Washington University in St. Louis