Off-resonant photoacoustic spectroscopy for analysis of multicomponent gas mixtures at high concentrations using broadband vibrational overtones of individual gas species

The broadband photoacoustic spectroscopy (PAS) technique is proposed and demonstrated for measurement of CH_4, CO_2, and H_2O vapor in the 1.6 to 2.0   μ m wavelength region. The wide spectrum of a supercontinuum light source is used to cover broadband absorption bands of multiple gas ...

Source: Applied Optics - May 18, 2019 Category: Physics Authors: Ramya Selvaraj Nilesh J. Vasa S. M. Shiva Nagendra Source Type: research