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Broadband Dielectric Beamsplitters

Broadband Dielectric Beamsplitters
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O p t i c s 543 Email: sales@newport.com • Web: newport.com WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Broadband Dielectric Beamsplitters Our broadband dielectric beamsplitters are designed to provide general purpose laser beamsplitting and combining for visible through near infrared applications. Each coating is essentially achromatic across a wide spectral band so that a single optic will work for the entire range of a particular tunable laser, for several laser diode wavelengths, or for most visible laser wavelengths. • S-polarized beams split R/T = 50/50 • P-polarized beams split R/T = 30/70 • AR coated back surface eliminates ghosting • Slight wedge virtually eliminates internal fringes • BK 7 or UV fused silica substrates Specifications Material BK 7, grade A, fine annealed optical glass UV grade fused silica Surface Flatness Specification below at 632.8 nm over the clear aperture Clear Aperture >central 80% of diameter Diameter Tolerance +0/-0.13 mm Thickness Tolerance ±0.38 mm Wedge 30 ±15 arc min Chamfers 25.4 mm: 0.25-0.76 mm face width x 45° ±15° 50.8 mm & 76.2 mm: 0.38-1.14 mm face width x 45° ±15° Beamsplitter S1 Coating Rs= 50% ±5%, Rp Rs at 45° over the specified wavelength range Antireflection S2 Coating Multilayer coating, Ravg 0.75% at 45° over the specified wavelength range Durability MIL-C-675C Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) Damage Threshold 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses, typical Coatings Wavelength Range (nm) Reflectivity Angle of Incidence Coating Code 480–700 Rs = 50 % 45° BS.1 700–950 Rs = 50 % 45° BS.2 1290–1580 Rs = 50 % 45° BS.3 Ordering Information To order, append the coating code BS.1, BS.2, or BS.3 to the substrate number. For example, 10B20+BS.1 = 10B20BS.1 Model Diameter (mm) Thickness (mm) Material Surface Flatness Surface Quality 10B10 25.4 6.10 BK 7 ë/5 20-10 10B20 25.4 6.10 BK 7 ë/10 15-5 10Q20 25.4 6.10 UVFS ë/10 15-5 10Q40 25.4 6.10 UVFS ë/20 10-2 20B10 50.8 9.40 BK 7 ë/5 20-10 20B20 50.8 9.40 BK 7 ë/10 15-5 20Q20 50.8 9.40 UVFS ë/10 15-5 20Q40 50.8 9.40 UVFS ë/20 10-2 30B10 76.2 12.45 BK 7 ë/5 20-10 30Q20 76.2 12.45 UVFS ë/10 15-5 30Q40 76.2 12.45 UVFS ë/20 10-2 C ø A ø B 30 arc min Wedge NOTE: S1 and S2 defined in specifications table S S2 1 Dimension (mm) Model øA øB C 10B/10Q 25.4 20.3 6.10 20B/20Q 50.8 40.6 9.40 30B/30Q 76.2 61.0 12.45

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Broadband Dielectric Beamsplitters 1Pages

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Broadband Dielectric Beamsplitters
1Pages