PHOTOACOUSTIC MULTIPASS CELL WITH CONCENTRATING REFLECTION MEANS

摘要

The invention relates to a photoacoustic multipass cell, comprising a light source and concentrating means (3) for the reflection of light in an acoustic resonator (8). According to the invention, said means are configured in a concentrating manner, the light source being arranged between the concentrating means. Two spheric mirrors (3) having a common optical axis can be used as means for reflecting the light. The light source is constituted by a fibre (5) that is guided into the multipass cell or by a laser diode.