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Optical heterodyne detection for ultra-high Q micro-disk laser sensor
- Optical heterodyne detection for ultra-high Q micro-disk laser sensor
- Ji, Myung-Gi; Son, Byung-Hee; Kim, Tae-Ryong; Jung, Mi; Kim, Hong-Seung; Kim, Chil-Min; Oh, Kwang Ryong; Choi, Young-Wan
- DGIST Authors
- Kim, Hong-Seung; Kim, Chil-Min
- Issue Date
- Laser Resonators, Microresonators, and Beam Control XVIII, 9727
- Article Type
- Conference Paper
- In this paper, we propose a bio-sensing method using optical heterodyne detection for ultra-high Q micro-disk laser (MDL) sensor platform. MDL structure with ultra-high Q-factor (> 108) has advantage in detecting a small variation of the lasing wavelength. For example, when a single molecule is attached to sidewall of MDL, the lasing wavelength is changed by sub-pm. Optical spectrum analyzer (OSA) has limits to detect sub-pm variation in the resonant wavelength because of the spectral resolution. In order to overcome this limitation, we used a heterodyne detection method which needs two MDLs with the same characteristics. © 2016 SPIE.
- Related Researcher
Kim, Chil Min
Micro Laser Laboratory
Laser; Nonlinear Dynamics; Quantum Chaos; Microcavity Laser
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- Department of Emerging Materials ScienceMicro Laser Laboratory2. Conference Papers
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