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MKS launches new laser power meter


Ophir Helios Plus is desjgned for measuring high power lasers plus blue, green, and infrared wavelengths

MKS Instruments has announced the Ophir Helios Plus, an expanded version of the Ophir Helios industrial laser power meter. The Helios Plus has all the features of the Helios for measuring a wide range of high power lasers in production operations, as well as the ability to measure additional wavelengths, such as blue and green lasers used in copper welding in the automotive industry.

The Helios Plus power meter measures high power industrial lasers of up to 12kW and, for increased flexibility, provides an expanded choice of wavelengths: 450-550nm (blue/green) and 900-1100nm (infrared). This is especially important in the automotive industry where heat conduction welding with blue and green lasers is becoming the first choice for battery welding and connecting small copper parts in electrical components. The Helios Plus power meter is described as being compact, requires no water cooling, and provides a high damage threshold. PROFINET, Ethernet/IP, and RS232 communication options make it easy to integrate into manufacturing networks. Once integrated into the production control system, fully automated measurements can be made.

"Automotive manufacturers are facing new challenges as copper is increasingly used in battery production and hairpin welding," said Reuven Silverman, general manager Ophir Photonics. "While the use of high power blue and green laser sources promises a more stable and efficient process, this requires familiarity with laser wavelengths that are new to those working on production lines. For instance, joints in battery packs and thin foils in battery cells demand precise welding depths, heat input, and minimal spatter to prevent damage to surrounding components that are close to the welding position."

The Helios Plus industrial power meter measures high power solid state lasers – such as diode, fiber, and Nd:YAG lasers – with powers from 100W to 12kW and energies from 10J to 10kJ. The system operates by measuring the power, energy, and exposure time of a short 0.3 to several seconds pulse and then calculating power. By keeping the pulse energy under 10kJ, there is no need for water or fan cooling. This results in a convenient, compact design. The Helios Plus power meter has a high damage threshold of over 6kW/cm2, a fast 2s response time, and short 10s wait between pulse measurements.

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