Catalysis

Materials science

Nitrous oxide

Quantum cascade laser

Biochemistry

Carbon monoxide

Photoacoustic spectroscopy

Laser

Physics

Organic chemistry

Optics

Terahertz radiation

Environmental chemistry

Environmental science

Analytical Chemistry (journal)

Water vapor

Chemistry

Carbon dioxide

Optoelectronics

Photoacoustics

We report on a gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) able to detect multiple gas species for environmental monitoring applications, by exploiting a Vernier effect-based quantum cascade laser as the excitation source. The device emission spectrum consists of ten separated emission clusters covering the range from 2100 up to 2250 cm

Multi-gas quartz-enhanced photoacoustic sensor for environmental monitoring exploiting a Vernier effect-based quantum cascade laser