Folded Gas Cell

The folded gas cell is a compact multipass gas absorption device designed for trace gas absorption spectroscopy detection. Based on the Herriott gas absorption cell design, the product further compresses the overall size through an optical path folding structure, achieving an effective optical path of 10 m and a 10×8 multipass optical path within a smaller cell volume, balancing long optical path, high sensitivity, and miniaturization. The product uses high-precision mirrors and Protected Au (gold film) coating, and can be used in fields such as environmental monitoring, gas detection, medical diagnosis, and fundamental atomic and molecular physics. Compared with traditional long-optical-path cells, the folded structure is more conducive to miniaturized system integration and facilitates the configuration of pressure control, temperature control, and other peripheral equipment.