Herriott Multi-pass Gas Absorption Cell

QTHC is suitable for laser spectroscopic analysis of various gas molecular samples. The unique mirror design allows the laser beam forming multiple reflections in the absorption cell. The effective optical path can reach tens of meters in a small space, enabling efficient absorption of photons in small volume. Compared to the White cell, Herriott cell features a more stable structure, better insensitiveness to heat deformation, smaller size, simpler installation, and easier operation. The cell is suitable for various application fields, such as laboratory trace gas analysis, processes gas spectrometer, environmental pollutant monitoringetc.

Features:

• Switching between open-path or close-pathmodes withoutthe need forbeam re-alignment;

• With close-path mode, the air pressure can be as low as tens of Pascals;

• The laser entrance and exit holes can be designed on the same side or both sides of the mirrors based upon customer requirements.

• Can be customized according to specific requirements, with an effective optical path ranging from several meters to tens of meters.