Images in the banner Broadband and cavity spectrometer Picture of our cavity spectrometer while open, showing one of the two mirrors used to reflect microwave radiation. The molecules are injected in the cavity through the hole in that mirror. Poppets used in the general valve to realize the supersonic expansion of the studied species. Surface of one of the mirrors of the cavity spectrometer showing the microwave antenna. View of the inside of the broadband and cavity spectrometer showing one of the two mirrors (right) used for cavity measurements and one of the two the horns (left) used for chirped-pulse or DR experiments. Some of the swagelock connectors used for the gas manifold.