The PolySense team has just published a new article on Light: Science & Applications Journal (IF 19.4) reporting on a long-wave, high-power, wide-tunable, singlelongitudinal- mode solid-state laser used as light source in a PAS sensor for trace gas detection. The wide wavelength tuning range of 9.44 nm covers the absorption spectra of water and ammonia, with a maximum optical power of ~130 mW, allowing dual gas detection with a single laser source. The solid-state laser was used as light source in three different photoacoustic detection techniques: standard PAS with microphone, and external- and intra-cavity quartz-enhanced photoacoustic
spectroscopy (QEPAS), proving that solid-state laser is an attractive excitation source in photoacoustic spectroscopy.
The following link provides access to the article:
http://polysense.poliba.it/wp-content/uploads/2024/05/s41377-024-01459-5.pdf
