TDLAS.com is a site devoted to Physical Sciences Inc. tunable diode laser absorption spectroscopy products and services.

This site is complete with introductory material on tdlas theory and applications, information for PSI's TDL gas sensor products and services, and useful links for gas phase spectroscopy.

PSI designs, builds, and sells advanced TDLAS systems and accessories for trace gas sensing in a broad array of applications, as well as for gas velocity and temperature measurement. We push the leading edge of TDLAS technology by continued R&D to improve the performance and reduce the cost of TDLAS sensors.

Until recently, TDLAS for gas analysis was suitable for laboratory use only, requiring highly trained individuals to operate high-maintenance devices and provide expert interpretation of the outputs. During the past decade, however, the technology has emerged from the laboratory to become a reliable, robust, and (for selected industrial applications) commercially available means for continuously measuring and, in some cases, controlling extremely small concentrations of selected trace gas species. Based on semiconductor laser chips that operate at room temperature and transmit light through optical fibers, TDLAS gas analyzers are attractive for continuous in-situ measurements to monitor and control chemical, combustion, or manufacturing processes in harsh, hazardous, or difficult to access industrial environments.

For more information about Physical Sciences Inc., please visit the PSI web site.