A 2.7 $\mu$m Backward Wave Optical Parametric Oscillator Source for CO${}_2$ Spectroscopy

Adrian Vågberg, Martin Brunzell, Max Widarsson +4

In this study, we demonstrated the direct use of an inherently narrowband backward wave in the mid-infrared for CO${}_2$ and H${}_2$O vapor spectroscopy in ambient air. This wave is ge…