Rectangular quartz tuning fork and trace gas detection device based on rectangular quartz tuning fork

• Main Authors: DONG LEI, WU HONGPENG, SHANG ZHIJIN, LI SHANGZHI
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of gas sensing, and particularly relates to a rectangular quartz tuning fork and a trace gas detection device based on the rectangular quartz tuning fork. The rectangular quartz tuning fork is characterized in that mutually symmetrical rectangular via holes are formed in the inner sides of two vibrating arms, and hammer-shaped structures are arranged at the top ends of the vibrating arms, so that the top end mass of the vibrating arms is increased. The inner side of the vibrating arm is provided with the rectangular via hole, so that the rectangular quartz tuning fork realizes clean passing of a wide light beam under a very small size, and the miniaturization characteristic of the quartz enhanced photoacoustic sensor is maintained; the problem that the combination application of a commercial standard quartz tuning fork and a quantum cascade laser or a terahertz light source with a large divergence angle is limited by the narrow vibrating arm distance is solved. 本发明