Multi-mode absorption spectroscopy, MUMAS, using wavelength modulation and cavity enhancement techniques
Applied Physics B: Lasers and Optics 100:3 (2010) 665-673
Abstract:
Multi-mode absorption spectroscopy, MUMAS, has been combined with the techniques of wavelength modulation spectroscopy, WMS, and cavity enhanced absorption spectroscopy, CEAS, to record multiple molecular transitions using a single laser and a single detector. MUMAS signals were recorded using a multi-mode diode laser of the A-band b1Σg+ → X3Σg- of molecular oxygen at 760 nm. Direct MUMAS and WMS-MUMAS signals were recorded using a White cell for air and pure oxygen for pressures in the range 0 to 1 bar. CEAS-MUMAS signals were recorded with and without WMS in an open enhancement cavity containing laboratory air. Enhancement of the signal-to-noise ratio has been obtained demonstrating the potential for increased detection sensitivity for gas-sensing applications of MUMAS. © Springer-Verlag 2010.Detection of C2H2 and HCl using mid-infrared degenerate four-wave mixing with stable beam alignment: towards practical in situ sensing of trace molecular species
APPLIED PHYSICS B-LASERS AND OPTICS 98:2-3 (2010) 593-600
Linear and Nonlinear Optical Methods for Multi-Gas and Multi-Parameter Sensing
Optica Publishing Group (2010) ltuc1
Multi-mode absorption spectroscopy, MUMAS, using wavelength modulation and cavity enhancement techniques
Applied Physics B: Lasers and Optics (2010) 1-9
High-resolution infrared polarization spectroscopy and degenerate four wave mixing spectroscopy of methane
APPLIED PHYSICS B-LASERS AND OPTICS 94:4 (2009) 715-723