The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 8.48) reporting on an ultra-highly sensitive light-induced thermoelastic spectroscopy (LITES) based hydrogen chloride (HCl) sensor, exploiting a custom low-frequency quartz tuning fork (QTF) and a fiber-coupled multi-pass cell (MPC) with optical length of 40 m. At an integration time of 200 ms, a minimum detection limit (MDL) of 148 ppb was achieved. The reported sensor also shows an excellent linear response to HCl gas concentration in the investigated range.
The following link provides access to the article:
http://polysense.poliba.it/wp-content/uploads/2022/06/144_HCL-lites_2022.pdf
