Covering a Wide Range of Power Coherent offers a wide variety of off-the-shelf OEM thermopile sensors that cover a wide range of laser operating conditions. The OEM sensors listed here can be operated from 10 mW to 1 kW, from the ultraviolet to far-infrared wavelengths, and with active areas up to 50 mm in diameter. These compact sensors must be water-cooled to achieve the maximum power handling limits. Passive air-cooled power limits are also provided. Most of the sensors covered in this datasheet are providing a passive signal via a BNC output or an amplified signal via a 4-pin connector. The amplified sensors require ±10 to 20 Volt power applied into the 4-pin connector to operate the amplifier. The BeamFinder OEM sensor, a compact 1 kW water-cooled thermopile that includes beam position data, incorporates a DB-25 connector for use with one of our stand-alone meters like the LabMax-Pro SSIM. Many of these sensors also have USB and RS-232 configurations available for directly connecting to a PC or industrial controller.