Ophir Photonics’ 1000WP-BB-34 high-power water cooled thermal sensor is designed with the requirement that all materials coming in contact with the cooling water are either copper or nonmetallic. This eliminates the possibility of contaminating the water or corroding the sensor, improving the accuracy and reliability of the measurements. The sensor features a 34-mm aperture and a wide dynamic range, measuring powers from 5 W to 1000 W and energy from 400 mJ to 300 J. The broadband absorbers can measure a spectral range from 190 nm to 20 μm. The sensor provides a damage threshold of 6 KW/cm² at full power and a 2.5 s response time.