Upadhyay, AbhishekAbhishekUpadhyayChakraborty, Arup LalArup LalChakraborty2025-08-302025-08-302012-01-01[9781467347181]10.1364/photonics.2012.t2b.22-s2.0-84881137159https://d8.irins.org/handle/IITG2025/21204Recovery of the absolute absorption line shape is demonstrated for methane with a 1650nm edge-emitting laser and for carbon dioxide with a 2004nm VCSEL. The potential for direct detection and wavelength modulation spectroscopy are explored. © 2012 OSA.falseDetection of methane at 1650nm and carbon dioxide at 2004nm using tunable diode laser spectroscopyConference Paper201216545690cpConference Proceeding0