The 919P-030-17HD thermal power/energy laser measurement sensor features a high damage threshold for both power and energy. It has a 17 mm aperture and can measure from 0.1 to 30 W continuously and to 150 W intermittently. It can measure energy from 50 mJ to 300 J. Its SV absorber type has a damage threshold of 1 J/cm² and 60 kW/cm² for repetitive pulses and covers the 190 to 11 µm wavelength range. The sensor comes with a standard 1.5 meter cable for connecting to a meter and a 2.25 inch long 1/2 inch diameter post with a 1/4-20 tapped hole on both ends.
The 919P-030-17HD uses the SV premium absorber. It is designed for use with high repetition lasers (>10 kHz) with ultra-short pulses of ns and ps, for which there are more damage threshold mechanisms in addition to the thermal effects and the sensor can be damaged due to ablation of the surface after long use.
The thermopile detector’s response to the input laser beam is characterized by its absorption. Newport thermopile sensors use four different types of coating in the sensors. The broadband BB type is employed in most of the 919P models and has an excellent absorption throughout the responsive wavelength range. The CM and SV types are used mainly with high repetition lasers with ultra-short pulses and have a relatively flat response.
The 919P sensors using BB and SV absorbers can measure wavelengths up to 11 µm, while the CM sensors can measure up to 9.4 µm.
The PF type has wavelength dependent response, and it is employed in the sensor 919P-050-18HP, which is specially designed for high energy density pulses and can measure up to 2.2 µm.
The 919P series thermopile detectors have been extensively tested for the damage threshold with a variety of lasers. You can trust our specifications and have your mind at ease.
Each 919P thermopile sensor includes a DB15 connector and internal EEPROM for storing factory calibration data. Most sensors (BB) are calibrated at three different wavelengths at 532 nm, 1070 nm and 10.6 µm. Other sensor types (PF, CM and SV) use other or additional wavelengths for their calibration for example: 190, 248, 355, and 2100 nm. Calibration of the thermopile detectors is recommended annually to assure NIST traceability.
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