The PolySense team has just published a new article on Optics Letters Journal reporting on a novel clamp-type quartz tuning fork enhanced photoacoustic spectroscopy, by designing, realizing, and testing of clamp-type quartz tuning forks (QTFs) for photoacoustic gas
sensing. This novel QTF design results in a more than ten times increase in the area available for laser beam focusing for the QEPAS technique with respect to a standard 32KHz-QTF. The possibility to implement a micro-resonator system for clamp-type QTF is also investigated. A signal-to-noise enhancement of ∼30 times has been obtained with a single-tube acoustic micro resonator length of 8 mm, ∼20% shorter than the dual-tube micro-resonator employed in a conventional QEPAS system.
The following link provides access to the article: