Compact carbon dioxide sensor using tunable diode laser absorption spectroscopy for capnographic monitoring

• Published in: Spectroscopy letters Vol. 55; no. 3; pp. 183 - 191
• Main Authors: Li, Jinyi, Cheng, Xinyu, Tian, Xinli, Zhao, Hang, Li, Lianhui
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 16.03.2022; Taylor & Francis Ltd
• Subjects: Capnography; Carbon dioxide; carbon dioxide monitoring; circular gas cell; Distributed feedback lasers; Laser spectroscopy; Lasers; Monitoring; Pneumothorax; Semiconductor lasers; Sensors; Spectrum analysis; tunable diode laser absorption spectroscopy; Tunable lasers

In order to realize real-time capnographic monitoring, a compact carbon dioxide sensor based on tunable diode laser spectroscopy technology was developed by means of a 2004 nm distributed feedback laser and a circular gas cell. The toroidal cell can achieve an optical path length of 3.49 m in a volu...