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Sensing & Measurement

Thermopile detectors


Newport Corporation introduces three new additions to the Newport 818P Series of thermopile detectors, the fan-cooled 818P-500-55, the water-cooled 818P-3KW-060, and the high-sensitivity 818P-001-12NIR. Newport is meeting more demanding customer requirements with these updated sensors, one of which is capable of measuring as low as 1 uW range with very low thermal drift, and another which can measure up to 3kW of continuous-wave (CW) optical power, which is ideally suited for fiber lasers and CO2 lasers.

The 818P-500-55 thermopile detector with a cooling fan, can handle up to 500 W of continuous optical power. The new device also features a large 55 mm diameter active area and very flat responses in an extended wavelength range from 0.19 to 20 microns.

The 818P-3KW-060 is a water-cooled detector that can handle up to 3kW of CW optical power, the highest possible power for Newport optical detectors. When illumination is limited, it can handle up to 4 kW of power for up to five minutes. Strategically designed to perform effectively and with low sensitivity to the cooling water temperature, this model is ideal for lasers with a very high optical output power, such as CO2 lasers and fiber lasers.

The innovative, high sensitivity 818P-001-12NIR thermopile optical sensor is designed to measure down to micro-watt-level optical power, with a wavelength range from 0.28 to 1.36 microns. This product is insensitive to beam position and offers the spatial dependence of thermopiles, while retaining the high sensitivity only available with photodiodes.