Beam sampler BA16-60S

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CMOS sensors have low saturation levels as well as low damage thresholds. It is thus very important that you control your laser power to get the best measurement possible and avoid damaging the BEAMAGE camera. SAMPLE YOUR LASER BEAM The BA series optical attenuators use Fresnel reflection on two orthogonal wedges to pick off a small fraction of the input beam. The incoming beam polarization state and irradiance are preserved. MANY POSSIBLE USES • Monitor power and beam profile simultaneously • Polarization insensitive beam-splitter with no back-reflections • Optical pick-off for use with our energy or power detectors • Attenuator for our high sensitivity detectors like M6 series and PH series PRESERVES POLARIZATION The BA series optical attenuators use Fresnel reflection on two optical wedges to pick off a small percentage of the input beam. Since the wedges are oriented orthogonally, the S and P polarization states are switched when the refl ected beam hits the second wedge, and the difference in reflectance between the two states cancels out. The incoming beam polarization state and irradiance are thus preserved. The wavefront distortion is negligible and the laser output power stability is not affected. MONITOR POWER AND PROFILE SIMULTANEOUSLY The BA16K/BA32K models include a calibrated thermal power detector that also acts as a beam dump. Simply plug the detector into a Gentec-EO power meter to measure and display relative power in real time. To obtain an absolute measurement of power, you will have to determine a correction factor for the BA16K/BA32K. This can be accomplished in few simple steps.