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Proceedings Paper

Optical heterodyne detection for ultra-high Q micro-disk laser sensor
Author(s): Myung-Gi Ji; Byung-Hee Son; Tae-Ryong Kim; Mi Jung; Hong-Seung Kim; Chil-Min Kim; Kwang Ryong Oh; Young-Wan Choi
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Paper 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.

Paper Details

Date Published: 22 April 2016
PDF: 6 pages
Proc. SPIE 9727, Laser Resonators, Microresonators, and Beam Control XVIII, 97271A (22 April 2016); doi: 10.1117/12.2212466
Show Author Affiliations
Myung-Gi Ji, Chung-Ang Univ. (Korea, Republic of)
Byung-Hee Son, Chung-Ang Univ. (Korea, Republic of)
Tae-Ryong Kim, Chung-Ang Univ. (Korea, Republic of)
Mi Jung, Chung-Ang Univ. (Korea, Republic of)
Hong-Seung Kim, Daegu Gyeongbuk Institute of Science & Technology (Korea, Republic of)
Chil-Min Kim, Daegu Gyeongbuk Institute of Science & Technology (Korea, Republic of)
Kwang Ryong Oh, Electronics and Telecommunications Research Institute (Korea, Republic of)
Young-Wan Choi, Chung-Ang Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9727:
Laser Resonators, Microresonators, and Beam Control XVIII
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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