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A novel high sensitive laser diode sensor based on micro-cavity

Title
A novel high sensitive laser diode sensor based on micro-cavity
Authors
Kim, Hong-SeungPark, Jung-MinKim, Sung-BockKim, Chil-MinOh, Kwang-Ryong
DGIST Authors
Kim, Hong-Seung; Kim, Chil-Min
Issue Date
2016
Citation
Integrated Optics: Devices, Materials, and Technologies XX, 9750
Type
Conference
Article Type
Conference Paper
ISBN
9780000000000
ISSN
0277-786X
Abstract
In this paper, we have proposed and demonstrated a high sensitive half ring laser sensor with a deep etched-sensing region based on III-V semiconductor. A whispering gallery mode propagates along the deep etched boundary of the HRL by the deep etched mirror at the edge of the HRL. In addition, the lasing direction of the proposed sensors is controlled by the reflection coefficient of the deep etched mirror at the side of the micro-cavity. The proposed sensors have advantages that an enhanced Q-factor by a stimulated emission and a controllable lasing direction for simplified alignment system. Additionally, the ultra-small variation of the effective refractive index according to molecules interactions could be sensitively detected with the proposed sensors using by a long evanescent field at the deep etched sensing region. © 2016 SPIE.
URI
http://hdl.handle.net/20.500.11750/3651
DOI
10.1117/12.2212030
Publisher
SPIE
Files:
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Collection:
Emerging Materials ScienceMicro Laser Laboratory2. Conference Papers


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