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  • J-50MB-IR EnergyMax
Aug 2009
Coherent Inc.Request Info
Energy Sensors for Medical Lasers
SANTA CLARA, Calif., Aug. 3, 2009 – Coherent Inc. has introduced laser pulse energy sensors that combine high accuracy, a high damage threshold and a large active area and that are optimized for use with medical lasers. The J-50MB-IR EnergyMax sensors measure laser beam diameters up to 30 mm from 1 mJ to 3 J, over the 500-nm to 3-µm spectral range. They are designed for use with long-pulse infrared lasers, making them compatible with the 2100-nm holmium, the 2940-nm erbium, the 694-nm ruby and the 532- and 1064-nm Nd:YAG lasers commonly used for hair removal and other aesthetic dermatological treatments and dental procedures.

Energymax.jpgThere are four models in the series, offering maximum repetition rates from 20 to 10,000 Hz and aperture diameters from 10 to 50 mm. Onboard sensors provide automatic temperature compensation, and modular heat sinks extend the measurement range. The molded cable with bend and strain relief protects against rough handling.

The sensors combine the proprietary MaxBlack coating, a large-area pyroelectric detector and a set of integrated diffusers to achieve a damage threshold that the company says is five times higher than that available from other products on the market. Built-in spectral compensation delivers an energy measurement accuracy of ±3% over the entire spectral range.

The compact devices can measure large beams and can be used in tight spaces inside of instruments.

For more information, visit:  

Coherent Inc.
5100 Patrick Henry Drive
Santa Clara, CA 95054
Phone: (408) 764-4000
Fax: (408) 764-4800


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The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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