Lasers and Optics Interface Tunable Diode Lasers for Trace Gas Detection: Methods, Development, and Future Outlook

摘要

Tunable diode laser absorption spectroscopy (TDLAS) has been a popular technique for trace gas detection for more than 20 years in academic and research circles. Commercial applications began to appear more than 10 years ago and have hit the mainstream in many markets. This article provides an overview of the methods and the development history of TDLAS, and discusses some of the future challenges for the technology.