Photometric in-situ spectroscopy involves the application of a variety of spectroscopic techniques to probe and interrogate material samples in situ (as opposed to remotely). Such information is typically used to assess and quantitate the chemical composition of a sample in a non-invasive and non-destructive manner. PSI's technology base in this area includes the application of: ultrasensitive absorption/extinction spectroscopy, diffuse reflectance spectroscopy, and a variety of excitation-induced emission spectroscopies including fluorescence, luminescence, Raman scattering, and atomic and infrared active molecular emission spectroscopy. In applying these techniques to specific problems, PSI scientists and engineers will select the most appropriate technique for the application, and then often devise customized approaches to optimize sample excitation along with photometric signal generation, extraction, and analysis.

Photometric In-Situ Spectroscopy Publications		Atmospheric Sciences Research Area Optical Sciences Research Area Chemical Sciences Research Area Life Sciences Research Area Medical Technology Research Area Applied Optics Enterprise Sensors and Materials Enterprise