Compact Laser Beam Splitter for Extremely High Attenuation up to 15MW/cm2

Posted Nov 04, 2019 by Ophir Optronics

MKS Instruments has unveiled a new beam splitter for high power NIR lasers, the Ophir LBS-300HP. It is a compact device that can deliver extremely high power density attenuation, up to 15MW/cm2 at 5kW. It reflects less than 0.0001% of the incident NIR beam while transmitting 99.9999%. This enables measurement of beam shape, focal spot, beam waist, and overall power. The patent pending beam splitter is ideal for online beam profiling in a variety of high power military lasers, and Nd:YAG applications in industrial materials processing and R&D.

According to Reuven Silverman, General Manager for the Ophir brand, as use of high beam quality lasers increases in materials processing and military applications, there is a growing need for measurement equipment that can handle higher powers without damage. The new LBS-300HP-NIR beam splitter is enabling technology that, for the first time ever, allows camera based beam profiling for high power lasers.

The LBS-300HP-NIR beam splitter measures NIR laser powers from 100mW – 5kW at power densities of up to 15MW/cm2. It operates by reflecting a fraction of the 2 incoming laser beam into the camera through the front surfaces of a pair of orthogonally oriented wedges. This reflects the beam in three directions: <0.0001% to the Ophir beam profiler camera, 99.9% to the Ophir power meter sensor, and 0.1% to the Ophir beam dump. The result is uniform attenuation of any beam shape, from Gaussian to flat-top to doughnut.

The beam splitter attaches to C-mount, CS-mount, or Ophir mount cameras. A set of adjustable ND filters are provided for final intensity adjustments before the beam reaches the camera imager. Availability & Pricing is available through MKS.

Click here to view detailed specifications of the LBS-300HP-NIR.