1. TeO2 Polarizing Optics – Glan Prisms

2. Company "Elent A/Elent Technics" has more than 20 years experience in manufacturing and processing of TeO 2 crystals. Based on our own production and technical capabilities we now offer to our Customers TeO 2 Polarizing optics - Glan and Wollaston prisms as well as Beam Displacers. Prisms can be manufactured with air clearance and glued depending on Customer specific requirements. Together with stable quality we offer prisms with high aperture (40 mm and up) and perfect material uniformity that provides high polarization level. Below in this presentation you will find information about Glan Polarizing Prisms. We offer quality and stability!

3. General Information All polarizing optics based on TeO 2 has parameters not worse than:  Extinction ratio - 1:100000  Power capability - 200 MWt/cm 2  Scratch/Dig - 20/10  Flatness - ¼ λ (633 nm)  X-Ray oriented: 3 min.  Angle tolerance: 2 min. We can put AR coating on in and out prism faces for selected wavelength with R<0,2%. Also we offer multilayer broadband AR coatings to in and out prism faces with following parameters:  AR coating 370 - 460 nm - R<0,5%  AR coating 440 - 750 nm - R<2%  AR coating 450 - 600 nm - R<0,5%  AR coating 700 - 1000 nm - R<0,75%  AR coating 1000 - 1400 nm - R<0,5%

4. Glan Polarizing Prism We offer to use prisms with air clearance for 4 wavelength ranges with basic wavelength (for this wavelength prism aperture is maximum and symmetric α = 2α1= 2α2):  Violet: 370 - 460 nm basic wavelength is 405 nm α = 4,55º  VIS: 440 - 750 nm basic wavelength is 532 nm α = 4,25º  NearIR: 700 - 1800 nm basic wavelength is 800 nm α = 4,07º  MiddleIR: 1000 - 5000 nm basic wavelength is 1330 nm α = 4,00º Design with air clearance allows effectively use prism in Violet and MiddleIR ranges. Surface stress effects are minimum that allow to get maximum uniform polarization field. By-turn gluing will increase angle aperture and increase usable range. Glued Glan prisms on TeO 2 we offer to use for 2 ranges:  VIS: 430 - 700 nm basic wavelength is 514 nm and angle aperture becomes α = 7,69º  IR: 650 - 5000 nm basic wavelength is 1330 nm and angle aperture becomes α = 6,25º

5. TeO 2 Glan Polarizing Prism (with air clearance) Violet Range (370 - 460 nm) Main Characteristics Basic wavelength is 405 nm Ordinary beam transmission coefficient Angle Aperture Maximum angle aperture at 405 nm is symmetric and equal to 4,55 degree То for 405 nm at normal incidence is 94 %

6. TeO 2 Glan Polarizing Prism (with air clearance Visible Range (440 - 750 nm) Main Characteristics Basic wavelength is 532 nm Ordinary beam transmission coefficient Angle Aperture Maximum angle aperture at 532 nm is symmetric and equal to 4,25 degree То for 532 nm at normal incidence is 91 %

7. TeO 2 Glan Polarizing Prism (with air clearance) Near IR Range(700 - 1800 nm) Main Characteristics Basic wavelength is 800 nm Ordinary beam transmission coefficient Angle Aperture Maximum angle aperture at 800 nm is symmetric and equal to 4,07 degree То for 800 nm at normal incidence is 89 %

8. TeO 2 Glan Polarizing Prism (with air clearance) Middle IR Range(1000 - 5000 nm) Main Characteristics Basic wavelength is 1330 nm Ordinary beam transmission coefficient Angle Aperture Maximum angle aperture at 1330 nm is symmetric and equal to 4,00 degree То for 1330 nm at normal incidence is 88 %

9. TeO 2 Glued Glan Polarizing Prism Visible Range (430 – 700 nm) Main Characteristics Basic wavelength is 514 nm Ordinary beam transmission coefficient Angle Aperture Maximum angle aperture at 514 nm is symmetric and equal to 7,69 degree То for 514 nm at normal incidence is 79 %

10. TeO 2 Glued Glan Polarizing Prism IR Range (650 – 5000 nm) Basic wavelength is 1330 nm Ordinary beam transmission coefficient Angle Aperture Maximum angle aperture at 1330 nm is symmetric and equal to 6,25 degree То for 1330 at normal incidence is 80 %

11. TeO 2 Polarizing Optics Possible application TeO 2 Polarizing prisms can be used as a substitution of natural calcite (CaCO 3 ) prisms so as nowadays it is very complicate to extract last one with good uniformity ratio and sizes for big aperture. Moreover TeO 2 prisms are the best variant for Middle IR range 1 - 5 mkm. Polarizing Optics based on tellurium dioxide makes a good showing as image polarizer in Acousto-optic Tunable filters and Spectrometers for IR range.

12. We are always open for cooperation and collaboration with our present and future customers and partners ! Sincerely yours “Elent A / Elent Technics” Team Gogol Str. 15, Dnepropetrovsk, 49044 Ukraine Tel./Fax + 380-56-7901235, 7901236, 7901237 info@elent-a.net www.elent-a.net