Laser Power and Energy Measurement in High Vacuum Environments

Laser power and energy measurements in high vacuum conditions are required in semiconductor, high energy physics, and space missions. But challenges need to be addressed, including outgassing, heat dissipation, signal transmission, and calibration.
Aug. 25, 2025

Designing a laser power or energy sensor for high vacuum conditions requires knowledge and understanding of the materials and their properties in vacuum, and the necessary equipment for testing the sensor in vacuum and under laser radiation in order to evaluate the outgas rate during pump down and during laser operation. This white paper discusses how to address the challenges when designing such sensors for high vacuum, including outgassing, heat dissipation, signal transmission, and calibration.