OPTICAL MIRRORS SPHERICAL AND ASPHERICAL LENSES • S-polarized beams split R/T = 50/50 • BK 7 or UV fused silica substrates Broadband Dielectric Beamsplitters • P-polarized beams split R/T = 30/70 • AR coated back surface eliminates ghosting • Slight wedge virtually eliminates internal fringes 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. Specifications 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 Diameter Tolerance Thickness Tolerance 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° Rs= 50% ±5%, Rp Rs at 45° over the specified wavelength range Multilayer coating, Ravg 0.75% at 45° over the specified wavelength range Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 854) Damage Threshold 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses, typical NOTE: S1 and S2 defined in specifications table Coatings Wavelength Range(nm) Coating Code BEAM EXPANDERS OPTICAL WINDOWS & CYLINDRICAL & DIFFRACTION GRATINGS ACHROMATIC LENSES MULTI-ELEMENT OPTICAL ASSEMBLY 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 Surface Flatness Surface Quality OPTICAL MODULATORS UV Grade Fused Silica UV Grade Fused Silica UV Grade Fused Silica UV Grade Fused Silica CLEANING & OTHER LAB ESSENTIALS UV Grade Fused Silica

OPTICAL MIRRORS Beamsplitters for Ultrashort Pulses SPHERICAL AND ASPHERICAL LENSES • Minimum pulse dispersion • Maximum bandwidth, 700–950 nm • Low wavefront distortion Typical Transmitted Wavefront Distortion l/10 at 632.8 nm over the clear aperture Clear Aperture Surface Quality 40-20 scratch-dig for UB.2 coated beamsplitters 20-10 scratch-dig for UB.4 coated beamsplitters Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 854) Beam should enter surface marked with an arrow Broadband, multilayer antireflection coating Ravg <0.75%, 660–1000 nm S2 Coating...

OPTICAL MIRRORS Broadband Polarizing Cube Beamsplitters SPHERICAL AND ASPHERICAL LENSES • Superior broadband performance • Extinction ratio >500:1, 1000:1 average BEAM EXPANDERS SF 2, NSSK grade, precision annealed optical glass Wavefront Distortion l/4 at 632.8 nm over the clear aperture Clear Aperture NOTE: To avoid damage, beam must enter prism on the side marked with a dot. Central diameter, >80% of dimension Surface Quality Extinction Ratio Reflected Beam Deviation Transmitted Beam Deviation Broadband, multilayer coating, Ravg <1.0% per surface Antireflection Coating Temperature Range Non-abrasive...

SPHERICAL AND ASPHERICAL LENSES • Metal-dielectric hybrid coating • Even split of laser power • Broadband and chromatically neutral • Insensitive to polarization Wavefront Distortion l/4 at 632.8 nm over the clear aperture Central diameter, >80% of dimension Surface Quality NOTE: To avoid damage, beam must enter prism on the side marked with a dot. S- and P-polarization components matched to within 10%, |Ts - Tp| 10%, |Rs - Rp| 10% Reflected Beam Deviation Dimensions Tolerance Antireflection Coating Broadband, multilayer coating, R <0.5% Temperature Range Non-abrasive method, acetone or isopropyl...

OPTICAL MIRRORS High-Energy Nd:YAG Laser 50/50 Beamsplitters BEAM EXPANDERS • Fused silica substrates • Low wavefront distortion • AR coated on back side The High Energy Nd:YAG Laser 50/50 Beamsplitters are designed to be used with Spectra-Physics Quanta-Ray lasers. Offered in 25.4 mm or 50.8 mm diameters, ultrahard multilayer coatings are optimized for high-energy pulses and high damage thresholds. UV Grade Fused Silica Surface Flatness l/10 at 632.8 nm over the clear aperture Diameter Tolerance Thickness Tolerance ≥ central 85% of diameter 10-5 scratch-dig Coating (First surface) 50% Reflection...

• High damage threshold • Low wavefront distortion • Hard refractory coatings UV grade fused silica Wavefront Distortion l/10 at 632.8 nm over the clear aperture l/4 at 632.8 nm over the clear aperture l/5 at 632.8 nm over the clear aperture Clear Aperture >Central 80% of diameter 10-5 scratch-dig Chamfers Angle of Incidence Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 854) Cleaning Damage Threshold 5 MW/cm2 CW, 5 J/cm2 with 0.1–100 nsec pulses at 1064 nm, typical 2.5 MW/cm2 CW, 2.5 J/cm2 with 0.1–100 nsec pulses at 532 nm, typical Email: [email protected]...

OPTICAL MIRRORS Ordering Information Reflected Wavelength (nm) PERFORMA™-i Series Optical Mounts HVM-1i Industrial Optical Mount page 887 OPTICAL WINDOWS & CYLINDRICAL & DIFFRACTION GRATINGS ACHROMATIC LENSES High-Energy Nd:YAG Laser Polarizing Cube Beamsplitters • Damage threshold up to 10 J/cm2 • No cement, optically contacted • Extinction ratio >200:1 • Low wavefront distortion High-energy polarizing cube beamsplitters provide efficient narrowband polarization for use with Nd:YAG lasers. Each polarizer consists of a pair of precision right-angle prisms optically contacted together. No cement...

Ordering Information OPTICAL MIRRORS SPHERICAL AND ASPHERICAL LENSES Laser Line Polarizing Cube Beamsplitters • Optimized for higher-power lasers • Extinction Ratio > 1000:1 for laser line polarizing cube beamsplitters CYLINDRICAL & OPTICAL WINDOWS & ACHROMATIC LENSES DIFFRACTION GRATINGS • Extinction Ratio > 100:1 for UV laser line polarizing cube beamsplitters • Low wavefront distortion Newport’s Laser Line Polarizing Cube Beamsplitters are designed to split a laser beam into two orthogonally polarized components, where the p-polarization is transmitted straight through while s-polarization...