Mid-infrared multi-mode absorption spectroscopy, MUMAS, using difference frequency generation
Applied Physics B: Lasers and Optics 118:3 (2015) 343-351
Abstract:
Multi-mode absorption spectroscopy of ammonia and methane at 3.3 μm has been demonstrated using a source of multi-mode mid-infrared radiation based on difference frequency generation. Multi-mode radiation at 1.56 μm from a diode-pumped Er:Yb:glass laser was mixed with a single-mode Nd:YAG laser at 1.06 μm in a periodically poled lithium niobate crystal to produce multi-mode radiation in the region of 3.3 μm. Detection, by direct multi-mode absorption, of NH3 and CH4 is reported for each species individually and also simultaneously in mixtures allowing measurements of partial pressures of each species.Mid-infrared multi-mode absorption spectroscopy, MUMAS, using difference frequency generation
Applied Physics B Springer Nature 118:3 (2015) 343-351
Simultaneous detection of CO2 and CO in engine exhaust using multi-mode absorption spectroscopy, MUMAS
Sensors and Actuators B Chemical Elsevier 198 (2014) 309-315
Multi-species detection using mid-infrared multi-mode absorption spectroscopy, MUMAS
Optics InfoBase Conference Papers (2014)
Abstract:
Multi-mode absorption spectroscopy has been used to detect CH4, NH3 and N2O individually or simultaneously in mixtures using multi-mode radiation generated by difference frequency generation at 3.3 μm or inter-band cascade lasers at 3.7 μm. © 2014 OSA.Multi-species detection using mid-infrared Multi-Mode Absorption Spectroscopy, MUMAS
Optica Publishing Group (2014) lw4d.3