Laser-Based Sensing


Optical Coherence Tomography

Capturing the unique coherence properties of lasers and making use of the new advances in data acquisition and processing, we develop new technologies for high speed 3D imaging of biological materials at the micron scale. As an example, we use Optical coherence tomography (OCT) to visualize tissue morphology, as well as its function by monitoring its blood perfusion or birefringence changes. We also combine OCT with other imaging or spectroscopic techniques, such as confocal microscopy, fluorescence imaging, Raman spectroscopy, etc. to provide a more complete image of the tissue morphology and function. Applications include investigations of the morphological and functional changes of the epithelial and intersitial tissue, as well as retinal imaging, with the goal of diagnosing various diseases, guiding therapies, or monitoring therapy response.

PSI’s UV MicroPulse Lidar for atmospheric aerosol monitoring


LIght Detection And Ranging – LIDAR – allows remote or standoff measurements of chemicals, aerosols, atmospheric properties such as water vapor and temperature, winds, and even partially obscured objects. We leverage the latest in compact solid-state laser and receiver technologies for next generation compact and automated LIDAR systems in applications from natural gas leak detection to weather prediction. See more in our case study of the Remote Methane Leak Detector

Tunable Diode Laser Absorption Spectroscopy (TDLAS)

Tunable Diode Laser Absorption Spectroscopy (TDLAS)

TDLAS combines miniature diode lasers with high-sensitivity absorption spectroscopy to sense trace concentrations of vapor-phase chemicals. We’ve led TDLAS technology and product development for 25 years in natural gas distribution, industrial combustion and process control, automotive, environmental, and biomedical markets. Current efforts are focused on low-cost, high-volume applications for widespread deployments in natural gas leak and greenhouse gas monitoring.