Replaceable actuator on 3 and 5 mm aperture versions èô Specifications Wavelength Range 200 nm to 2.1 ìm Resettability 0.05 dB Reflected Beam Deviation 20 ìrad, average over range Beam Offset 50 ìm Insertion Loss 0.05 dB, horizontal polarization Power Dissipation 20 W, average Damage Threshold 3 J/cm2 pulsed at 1064 nm, typical U.S.The attenuation for both polarizations increases as è approaches the critical angle for total internal reflection. For small wedge angles an input beam polarized in the plane of incidence can experience near zero attenuation when èô equals the Brewster angle èâ. However, with careful design, a symmetric arrangement of two pairs of counter-rotating wedges can be employed to produce an attenuator, with negligible output beam deviation and dynamic range proportional to the fourth power of the transmission of a single wedge. A single wedged plate is unsatisfactory as an attenuator because the output beam deviation varies with angle and the dynamic attenuation range is small. How does it work? A collimated beam incident on a wedged optical plate experiences Fresnel reflection which varies with incident angle èô. These attenuators are based on the principle of Fresnel reflection from four uncoated, counter-rotating UV fused silica wedged plates. HB-4X ø 44.5 127.0 HB-10X, HB-20X ø 85.7 248.0 High-Energy Variable Attenuators 935-5-OPT 935-10 Three aperture sizes of the 935 variable attenuators are available-3, 5, and 10 mm diameter.
#935 optical isolator code#
Web: WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Ordering Information To order, append the coating code AR.14, AR.16, AR.18, or AR.33 to the beam expander product number.
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