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Photon M2-1780 Laser Beam Profiling System

NORTH LOGAN, Utah, Jan. 28, 2013 — Ophir Photonics Group has announced the newest version of the Photon M2-1780 laser beam profiling system. It measures beam quality in real time and automatically measures the M2 beam propagation ratio and all associated ISO 11146 parameters instantaneously, at video rates >20 Hz.

The compact CCD camera-based system works with CW and pulsed lasers down to single-shot rates. The CCD is sensitive to wavelengths from ~250 to 1100 nm. It measures with NIST-traceable accuracy to better than 2% for M2 measurements with accuracy to −5%.

The instrument enables instantaneous measurement of the entire beam caustic at the frame rate of the camera. This means that even an unstable beam, or one in the midst of being adjusted, can be measured with direct and immediate feedback.

It uses 10 reflective surfaces provided by precisely aligned quartz wedges to divide the laser beam caustic into 10 slices, then focuses them on the CCD detector, enabling M2 and other parameters to be determined in real time. The CCD sensor is divided into 10 sectors, and the beam is aligned such that each beam measurement position is in one of these boxes. Once aligned, software reports the parameters for each frame the CCD acquires.

The M2-1780 works in conjunction with Photon Inc.’s FireWire BeamPro acquisition and analysis software.

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