Herriott Gas Absorption Cell

The Herriott gas absorption cell is a high-sensitivity gas absorption device based on a Herriott multipass reflective optical path design. Through multiple back-and-forth reflections of the light beam inside the gas chamber, it achieves an effective absorption optical path of 14.5 m within a compact volume of approximately 0.5 L. It can effectively enhance the absorption signal of gas molecules and improve the spectral detection capability for trace and weakly absorbing gases. The product adopts high-precision mirrors and a gold film coating, and is suitable for infrared-band gas absorption spectroscopy measurements. For different gas types, characteristic absorption lines, and system optical paths, customization services for the operating waveband and optical input/output modes are available, making it easy to integrate into TDLAS, laser gas analysis, and scientific spectroscopy systems.