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2019.08.08 14:24

[August 14. 2019] Principle of Semiconductor Quantum Cascade Laser and It’s Application to Chemical Gas Detection

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Speaker Dr. Byeong-il Seo(Agency for Defense Development)
Date Wed. 14 August. 2019
Time 2:00pm
Venue #331, Asan Hall, College of Science

Principle of Semiconductor Quantum Cascade Laser and It’s Application

to Chemical Gas Detection

 

There are many laboratory instrumental methods for analysing gaseous chemicals, but there are many limitations to detecting and identifying gaseous chemicals directly and quickly in the field and further optimizing the technology in the a portable way. Currently, Sensors for detecting gaseous chemicals are mainly applied by light detection, ion mobility detection using molecular properties, and methods using electrical properties of semiconductor devices or special precious metals. In this presentation, the principle and characteristics of QCL(Quantum Cascade Laser) as a kind of semiconductor laser and future detection sensor, and it’s application of the chemical gas detection technology in the mid-IR ranger(8~12㎛) will be explained. In particular, I’d like to introduce the detection and identification technology of the toxic chemical agents with absorption peaks in the mid-IR range.

 

20190814_대학원특별세미나_서병일박사.pdf


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No. Subject Speaker Date
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68 Fall semester 2016 Seminar Schedule file - -
67 Spring semester 2017 Seminar Schedule file - -
66 [Fri. 17 Mar. 2017] 9th RINS Symposium file - Fri. 17 Mar. 2017
65 [Thu. 27 Apr. 2017] Seminar was canceled! - -
64 [Wed. 5 July. 2017] Seminar is canceled! - -
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62 Fall semester 2017 Seminar Schedule file - -
61 Fall semester 2018 Seminar Schedule file - -
60 [October 10, 2017] Novel Terahertz Spectroscopies file Director Mischa Bonn Tue, October 10, 2017
» [August 14. 2019] Principle of Semiconductor Quantum Cascade Laser and It’s Application to Chemical Gas Detection file Dr. Byeong-il Seo(Agency for Defense Development) Wed. 14 August. 2019
58 [October 25, 2017] Ultrafast electron microscopy: applications in chemical and materials sciences Dr. Byung-Kuk Yoo October 25, 2017
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52 [October 15. 2019] A more sustainable chemistry with elemental sulfur file Dr. Thanh Binh Nguyen(Institut of Natural Product Chemistry) Tue. 15 October. 2019
51 [Thu. 13 Apr. 2017] Dr. Wan Ki Bae/Photoelectronic Hybrid Research Center, Korea Institute of Science and Technology, Seoul, Korea Dr. Wan Ki Bae Thu. 13 Apr. 2017
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