Due to a simpler design, the production of Herriott cells could be more economical and the time-consuming adjustment could be omitted. In conventional Herriott cells the laser light is bounced back and forth between two concave mirrors. So far, the laser has had to enter and leave through a small hole in the cell, which posed some difficulties for the operator. The new component can do without the "troublesome" hole. Application and manufacture are correspondingly robust. The device is also suitable for Cavity Ring Down Spectroscopy (CRDS), in which various gas species are detected simultaneously.
José Padilla Viquez