LBP2 Beam Sampling System, 190-1550 nm

The LBS2-SAM-BB2 beam sampler is designed so that the preferential polarization selection effect of a single wedge is cancelled out and the resulting beam image is polarization corrected to restore the polarization components of the original beam. The beam sampler operates by reflecting the incoming beam from the front surfaces of a pair of non-coated wedges through 90 degrees into the camera. Approximately 97% of the beam is transmitted through the beam sampler with 0.25% passed on to the camera. A set of adjustable ND filters for LBP2-SAM-UV (blue holders), -VIS (green), and -NIR (red) are all provided here to make final intensity adjustments to the beam before it reaches the camera imager. Two beam samplers can be coupled in series providing up to approximately 6 X 10^-6 attenuation. Note that the ND filters can have a thermal lensing effect, causing deformation of the image at as low as 5 W/cm².