BeamTrack from Ophir Photonics Group is a series of thermal detectors that combines multiple functions: power, energy, beam position, and beam size. The sensors also provide information on centering and beam wander and come in a compact unit that is the same size as single-function detectors of the same power level. The beam centering feature means the sensors deliver the most accurate power and energy measurements, which is especially critical for small-aperture devices. Sensors are featured with a range of aperture sizes, from 12 to 50 mm. The detectors use broadband or P-type absorbers and measure a spectral range of 150 nm to 20 µm.