Broadband Beamsplitters

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 Surface Microroughness 3—6 ERMS, typical Diameter Tolerance +0/-0.13mm Thickness Tolerance ±0.38 mm Wedge 30±15arc min Chamfers 25.4mm: 0.25—0.76 mm face width x45°± 15° 50.8  76.2 mm: 0.38—1.14 mm face width x45°±15° Surface S1 Uncoated, Fresnel reflection from uncoated substrate Antireflection Coating, S2 Multilayer coating, Ravg < 0.75% at 45° over the specified wavelength range Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Damage Threshold 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses

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 Surface Microroughness 3—GERMS, typical Diameter Tolerance +0/-0.13mm Thickness Tolerance ±0.38 mm Wedge 30±15arcmin Chamfers 25.4 mm: 0.25—0.76 mm face width x45°± 15° 50.8  76.2 mm: 0.38—1.14 mm face width x45°±15° Surface S1 Uncoated, Fresnel reflection from uncoated substrate Antireflection Coating, S2 Multilayer coating, Ravg < 0.75% at 45° over the specified wavelength range Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Damage Threshold 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses

Broadband Dielectric Beamsplitters

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 Surface Microroughness 3—GERMS, typical Diameter Tolerance +0/-0.13mm Thickness Tolerance ±0.38 mm Wedge 30±15arcmin Chamfers 25.4 mm: 0.25—0.76 mm face width x45°± 15° 50.8 76.2 mm: 0.38—1.14 mm face width x45°± 15° Beamsplitter Coating. S1 Rs=50±5%, Rp Antireflection Coating, S2 Multilayer coating Ravg < 0.75% at 45° over the specified wavelength range Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Damage Threshold 500 W/cm2 CW, 0.5 J/cm2 with 10 nsec pulses

Broadband Non-Polarizing Cube Beamsplitters

Material BK-7, grade A, fine annealed optical glass Surface Flatness < 1/4 at 632.8 nm over the clear aperture Clear Aperture Central diameter, > 80% of dimension Surface Quality 40-20 scratch-dig Transmission 45 ±5 %, independent of polarization Reflection 45 ±5% independent of polarization Polarization S- and P-polarization components matched to within 10% Absorption < 10% Transmitted Beam Deviation < 5 arc min Reflected Beam Deviation 90° ± 5 arc min Angle of Incidence 0°±5° Dimensions Tolerance ±0.25 mm Antireflection Coating Broadband, multilayer coating, R < 0.5% per surface Temperature Range -50°C to +90°C Orientation To avoid damage, beam should enter prism marked with a dot Cleaning Non-abrasive method, acetone or isopropyi alcohol on lens tissue are recommended. Cemented optic, do not immerse in a solvent Damage Threshold 100W/cm2 CW, 0.1 J/cm2 with 10 nsec pulses

Broadband Polarizing Cube Bbeamsplitters

Material SF 2, NSSK grade, precision annealed optical glass Wavefront Distortion 1/4 at 632.8 nm over the clear aperture Clear Aperture Central diameter, > 80% of dimension Surface Quality 20—10 scratch-dig Efficiency Тp > 80%, > 90% average Rs > 99.5% average Extinction Ratio Tp/ Ts > 500:1, 1000:1 average Transmitted Beam Deviation < 5 arc min Reflected Beam Deviation 90°±5arc min Angle of Incidence 0°±5° Dimensions Tolerance ±0.25 mm Antireflection Coating Broadband, multilayer coating, Ravg< 1.0% per surface Temperature Range -50°C to +90°C Orientation To avoid damage, beam should enter prism marked with a dot Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended. Cemented optic, do not immerse in a solvent Damage Threshold 2 kW/cm2 CW, 1 J/cm2 with 10 nsec pulses

Material 5 m thick polymer film membrane Wavelength Range 375-2400 nm Thickness Uniformity ±0.06 fringes/mm Temperature Range -40°C to +70°C Durability Hygroscopic film, keep from high humidity Cleaning Gently blow dust off only, do not touch or immerse membrane Damage Threshold Uncoated: 2 W/ cm2 CW, 1 J/cm2 with 10 nsec pulses

High Energy Nd: YAG Laser Polarizing Cube Beamsplitters

Material BK-7, grade A, fine annealed optical glass Wavefront Distortion < 1/4 at 632.8 nm over the clear aperture Clear Aperture Central diameter, > 80% of dimension Surface Quality 20 - 10 scratch-dig Efficiency Tp>95%, Rs>99.5% Extinction Ratio Tp/Ts > 200:1 Transmitted Beam Deviation < 5 arc min Reflected Beam Deviation 90°±5 arc min Angle of Incidence 0±5° Dimensions Tolerance ±0.25 mm Antireflection Coating Multilayer V-coating, R < 0.25% per surface Temperature Range -50°C to +90°C Orientation Beam should enter prism marked with a don't Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Damage Threshold 10 J/cm2 with 10 nsec pulses

Material BK 7, grade A, precision annealed optical glass Wavefront Distortion 1 < 1/10 at 632.8 nm over the clear aperture Clear Aperture > central 80% of diameter Surface Quality 20—10 scratch-dig Diameter Tolerance 25.4+0/-0.13mm Thickness 6.1 ±0.38 mm Wedge 30±15arcmin 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 Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Orientation Beam should enter surface marked with an arrow Damage Threshold 500 W/cm2 CW, 0.5 I/cm2 with 10 nsec pulses at 10 Hz

Material BK 7, grade A, fine annealed optical glass Wavefront Distortion ≤ 1/4 at 632.8 nm over the clear aperture Clear Aperture Central diameter, > 80% of dimension Surface Quality 20—10 scratch-dig Transmission 50 ±3%, independent of polarization Reflection 50 ±3%. independent of polarization Polarization S- and P-polarization components matched to within 3% Transmitted Beam Deviation ≤ 5 arc min Reflected Beam Deviation 90°±15arcmin Angle of Incidence 0°±2° Dimensions Tolerance ±0.25 mm Antireflection Coating Multilayer coating, R < 0.5% per surface Temperature Range -50°C to +90°C Orientation To avoid damage, beam should enter prism marked with a dot Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended. Cemented optic, do not immerse in a solvent Damage Threshold 2 kW/cm2 CW, 1 J/cm2 with 10 nsec pulses