Ozone detection by DFB QCL absorption technique using Multipass cell
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 5
Abstract
An ultra-sensitive and selective Direct Absorption based Distributed Feed Back Quantum Cascade Laser (DFB-QCL) sensor platform was demonstrated for detection of ozone traces. This sensor system used a wavelength tuned, high power, continuous wave (CW), DFB-QCL as the excitation source. For the ozone absorption line, located at 4.5676 µm, Pike (163- 16XX1–16vm) Glass Gas cell is used to introduce long optical path length thus to achieve very high sensitivity. The system is capable of detecting ozone traces generated out of vehicle exhaust at PPM level.
Authors and Affiliations
S. S. Yenaganti, S. S. Kulkarni, A. J. Verma, N. Sreevalsen, , V. Rathore
Keywords
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