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Laser Line Non-Polarizing Beamsplitters

Laser Line Non-Polarizing Beamsplitters
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Laser Line Non-Polarizing Beamsplitters - 1

O p t i c s 545 Email: sales@newport.com • Web: newport.com WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Laser Line Non-Polarizing Beamsplitters Newport Laser Line Non-Polarizing Beamsplitters are insensitive to the polarization of an incoming beam. Unlike broadband dielectric beamsplitters, these beamsplitters provide a true 50/50 split regardless of the incoming polarization. Also, these plate beamsplitters are especially useful for higher power applications where cemented cube beamsplitters may fail. • Insensitive to polarization • Polarization components matched to within 5% • Virtually zero absorption for true 50/50 beamsplitting • AR coated back surface eliminates ghosting • Slight wedge virtually eliminates internal fringes Specifications Material BK 7, grade A, fine annealed optical glass or equivalent Surface Flatness ë/10 at 632.8 nm over the clear aperture Clear Aperture >central 80% of diameter Surface Quality 15-5 scratch-dig Diameter 25.4 +0/-0.13 mm Thickness 6.1 ±0.38 mm Wedge 30 ±15 arc min Transmission 50 ±5%, independent of polarization Reflection 50 ±5%, independent of polarization Polarization S- and P-polarization components matched to within 5% Absorption <0.5% Angle of Incidence 45° ±3° Antireflection Coating Multilayer coating, R <0.5% per surface Edges Fine ground and beveled Temperature Range -50 °C to 90 °C Durability MIL-M-13508, MIL-C-675C, MIL-C-14806 Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) Orientation Beam should enter surface marked with an arrow Damage Threshold 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses, typical P S S P P S 100 75 50 25 0 Normalized Wavelength Transmission (%) 0.8 0.9 1.0 1.1 1.2 Typical NP.2x Ordering Information Model Wavelength (nm) Diameter (mm) 10B20NP.21 441.6 25.4 10B20NP.22 488 25.4 10B20NP.23 514.5 25.4 10B20NP.24 532 25.4 10B20NP.25 632.8 25.4 10B20NP.26 670 25.4 10B20NP.27 780 25.4 10B20NP.28 830 25.4 10B20NP.29 1064 25.4 10B20NP.30 1300 25.4 10B20NP.31 1550 25.4 Laser line non-polarizing beamsplitters are also available in 12.7 and 25.4 mm cubes, see page 549. 6.1 ø 25.4 ø 20.3 30 arc min Wedge ULTIMA® Corner Gimbal Optical Mounts page 654

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