Newport offers a complete line of optical meters and detectors, enabling low and high-power, as well as energy measurements. Four family types of photodetectors can be used with our optical meters: Low-Power Semiconductor Photodiodes, High-Power Thermopile Detectors, Pyroelectric Energy Detectors and Integrating Spheres. This detector line is very flexible and can be used to measure power and energy with both free-space and fiber optic inputs. The following tables, in combination with the Detector Performance Charts, should help identify the optical meter/detector combination appropriate for your particular optical measurement needs. It is always a good idea to select a detector that suits your needs before selecting an optical meter.