BEAMSPLITTER CUBES - Tower Optical - #1

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17 561-740-2525 • Fax 561-740-2518 sales@TowerOptical.com • www.TowerOptical.com Cage Code: 1N2U3 SDVO-SB ITAR Compliant Beamsplitters Polarization Beamsplitter Cubes These beamsplitters are based upon using two complementary prisms. The output beam that is parallel to the input beam is p-polarized, while the orthogonal output beam is s-polarized. Non-polarized beamsplitter cubes can be provided. Beamsplitters are used to split or combine beams of light. Tower Optical provides some standard beamsplitters, but most are custom per drawings submitted by a customer. Some standard cubes and plate beamsplitters are shown below. Plates are used formost laser applications as they exhibit low absorption. Cubes are a convenient, protected formfor low power applications. The performance of the beamsplitters is a function of the beamsplitter coating. Beamsplitter Plates Beamsplitter plates are primarily used to split or recombine a beam of light, especially in high power lasers. When using beamsplitter plates the two partial beams travel different optical paths. The optical paths depend on the incident angle and the thickness of the plates. The beam can be shifted. Model Narrow Size mm Price or Broad $ BSPN1-5-X N 5 x 5 x5 148 BSPN1-10-X N 10 x 10 x 10 148 BSPN1-15-X N 15 x 15 x 15 185 BSPN1-20-X N 20 x 20 x 20 209 BSPB1-10-Y B 10 x 10 x 10 160 BSPB1-15-Y B 15 x 15 x 15 190 BSPB1-20-Y B 20 x 20 x 20 203 X = Narrow band wavelengths: 488, 514, 633, 780, 850, 1064, 1300, 1550 nm, Y = Broad band ranges (nm): 1 = 450 - 680, 2 = 650 - 850, 3 = 900 - 1200, 4 = 1200 - 1550 Model Narrow Size mm Shape Price or Broad RND SQ $ BSNN1-12.7S-X N 12.7 x 12.7 x 3 SQ 56 BSNN1-25.4S-X N 25.4 x 25.4 x 3 SQ 78 BSNN1-25.4R-X N 25.4 x 3 RND 78 BSNN1-50.8S-X N 50.8 x 50.8 x 3 SQ 129 BSNB1-12.7S-Y B 12.7 x 12.7 x 3 SQ 67 BSNB1-25.4S-Y B 25.4 x 25.4 x 3 SQ 83 BSNB1-25.4R-Y B 25.4 x 3 RND 83 BSNB1-50.8S-Y B 50.8 x 50.8 x 3 SQ 133 Specifications Material: BK-7 grade A optical glass Dimension range: 3.2 mm to 50.8 mm Dimensional tolerance:
0.2 mm Angular tolerance:
3 arc minutes Surface quality: 60-40 Scratch-Dig Beam deviation: 3 arc minutes Extinction ratio: >100:1 Principal transmittance: Tp>95% and Ts<1% Principal reflectance: Rs>99% and Rp<5% Wavelength range: 226 nm to 2300 nm Polarization beamsplitter coating: on hypotenuse AR coating: R<0.25% per face for 4 faces Specifications Material: BK-7 grade A optical glass Diameter range: 10 mm to 50.8 mm Dimensional tolerance:
0.2 mm Thickness tolerance:
0.2 mm Flatness:  /4@632.8 nm per 25 mm Surface quality: 60-40 Scratch-Dig Parallelism: 1 arc minute T/R: 50/50
5% for random polarization T=(Ts + Tp), R=(Rs + Rp)/2 Coatings: 45º incidence S1: Single wavelength partial reflectance S2: “V” AR-coatings R T A A R T Pricing and Ordering Information The Beamsplitter specifications are general - We are happy to quote other specifications.