The objective of the internship is twofold. Initially, this will involve carrying out new experiments with the Raman probe in the new fume cupboard newly delivered to the CISLAB platform. The detection performance of this unit will be tested with calibrated gas bags or with a permeation oven (equipped with a PID). Secondly, the candidate will participate in the design of a new portable Raman device with a view to carrying out analyzes in the field. The internship subject involves various skills from different LIST laboratories (optics, electronics, spectrometry and spectral analysis, data classification).