Non-Contact Industrial Laser Monitoring
Ophir, PhotonicsRequest Info
BeamWatch® is the industry’s first non-contact, focus spot size and position monitor for very high power YAG, fiber, and diode lasers. Designed for material processing applications, the system instantly and accurately measures laser parameters without requiring contact with the laser beam. New features include the ability to monitor smaller diameter focus spots -- down to 80µm -- for cutting and welding of thinner materials, and 2D viewing of beams to determine roundness or the presence of astigmatism.
Laser cutting applications need the beam focused to a minimum spot size to maximize energy density and produce precision cuts. But many factors affect spot size, including the beam delivery system, thermal lensing, focal length, and spherical aberrations. BeamWatch® measures key size, position, and quality parameters, including focus spot shift, waist width, and beam propagation parameter (M2). This means you can finally watch and adjust to focus spot shifts in real-time. And with 2D viewing, you can see whether the beam is really round or if the vertical and horizontal components of the beam focus on different locations along the beam path.
BeamWatch® makes no contact with the laser because it measures the Rayleigh scatter of the beam. This means beams can be monitored at frequent intervals without having to shut down or disrupt the process to gain access. Conventional measurement systems place a probe in the beam, causing potential damage and slowing measurement; it could take up to two minutes to gather data and characterize the beam. BeamWatch® provides instant focus spot size measurements in millisecond intervals.
BeamWatch® monitors high power YAG, disc, fiber, and diode lasers in the 980-1080nm range and measures focal spot location at 60ms intervals to indicate whether focal spot shifts are occurring during critical start-up moments.