The PolySense team has just published a new article on Sensors and Actuators B Chemical journal reporting on a novel trace gas sensor exploiting fiber-ring laser intracavity quartz-enhanced photoacoustic spectroscopy. The following link provide access to the article.
http://polysense.poliba.it/wp-content/uploads/2018/05/97_FLY-QEPAS_-Sens-Act-B_2018.pdf