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This paper presents a detailed experimental wavelength modulation spectroscopy approach and demonstrates its applicability to various types of semiconductor lasers in the near infrared and mid-infrared. A 5250 nm continuous-wave distributed feedback quantum cascade laser, a 2004 nm vertical cavity surface emitting laser, and a 1650 nm distributed feedback edge-emitting laser are used to extract the...
In this paper, a large scale, multi-channel optical Chemical Species Tomography (CST) system is presented to aid research into aero jet-engine performance. Through high-speed, non-intrusive measurement and spatio-temporal imaging of gas concentration dynamics; fuel efficiency, emissions, combustion diagnostics and novel engine designs, can be tested to achieve greener aviation. A 126-channel tunable...
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