New Ophir Power/Energy Sensor with High Damage Threshold for High Power Density and Long Pulse Lasers

Posted Oct 08, 2018 by Ophir Optronics

MKS Instruments has released its newest addition to the Ophir line of LP2 laser power/energy sensors with high damage threshold, the L50 (150) A-LP2-35. It is a compact, thermal measurement sensor for use with high power density and long pulse lasers.

The L50 (150) A-LP2-35 features an LP2 coating that provides the highest damage threshold in the industry, 33kW/cm2 at full CW power of 150 W power. The coating also reduces reflection, absorbing 95% at most wavelengths, and is spectrally flat at ±1% from 0.25µm to 2.2µm. It is a compact device measuring 64 x 64 x 66 mm. It features a 35mm aperture and can measure laser power from 100 mW to 50 W continuously, and up to 150 W intermittently. It can also measure power up to 4000 W from a short 0.4s exposure to the laser. The sensor measures laser energy from 40mJ to 3000J.

The new LP2 coating offers very high absorption, which reduces dangerous and often harmful back reflection. The coating also allows the sensor to measure concentrated, lower power beams and short exposures of higher power.

All Ophir thermal sensors feature a “Smart Connector” interface that operates with the company’s Centauri, StarBright, Vega, Nova II, and StarLite smart displays, and Juno compact USB PC interface. Users can choose between a variety of data display formats, including Digital with Bargraph, Line Plot, Pulse Chart, and Real Time Statistics. The displays also feature sophisticated logging of power and energy, statistics, histograms, and more, as well as advanced math functions. The display is automatically configured and calibrated when plugged into one of the company’s laser measurement heads.