Editing Tunable diode laser absorption spectroscopy (section)

==Applications==
Freeze-drying (lyophilization) cycle development and optimization for pharmaceuticals.

Flow diagnostics in [[Hypersonic speed|hypersonic/re-entry speed]] research facilities and [[scramjet]] combustors.

Oxygen tunable diode laser spectrometers play an important role in safety applications in a wide range of industrial processes, for this reason, TDLS are often an integral part of modern chemical plants. The fast response time compared to other technologies for measuring gas composition, and the immunity to many background gasses and environmental conditions makes TDL technology a commonly selected technology for monitoring of combustible gasses in process environments. This technology is employed on flares, in vessel headspace and in other locations where explosive atmospheres must be prevented from forming.<ref>{{cite web |title=Tunable Diode Laser Spectroscopy: Theory & Background |url=https://www.mt.com/us/en/home/library/guides/process-analytics/TDL-booklet.html |publisher=Mettler-Toledo LLC |access-date=29 July 2021}}</ref> According to a 2018 research study, TDL technology is the 4th most commonly selected technology for gas analysis in Chemical Processing.<ref>{{cite web |last1=Purdum |first1=Traci |title=Gas Analytics: Study find ROI, Accuracy, Proof Key Factors |url=https://www.mt.com/us/en/home/library/white-papers/process-analytics/gas-measurement-equipment-chemical-processing-report.html |publisher=Chemical Processing |access-date=29 July 2021}}</ref>