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Optical heterodyne detection for ultra-high Q micro-disk laser sensor

Title
Optical heterodyne detection for ultra-high Q micro-disk laser sensor
Authors
Ji, Myung-GiSon, Byung-HeeKim, Tae-RyongJung, MiKim, Hong-SeungKim, Chil-MinOh, Kwang RyongChoi, Young-Wan
DGIST Authors
Kim, Hong-Seung; Kim, Chil-Min
Issue Date
2016
Citation
Laser Resonators, Microresonators, and Beam Control XVIII, 9727
Type
Conference
Article Type
Conference Paper
ISBN
9780000000000
ISSN
0277-786X
Abstract
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.
URI
http://hdl.handle.net/20.500.11750/3659
DOI
10.1117/12.2212466
Publisher
SPIE
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceMicro Laser Laboratory2. Conference Papers


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