OPTICS CATALOG AND REFERENCE GUIDE www.iiviinfrared.com

4 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 5 In 1971, II-VI Incorporated began by exclusively producing the highest-quality materials available for manufacturing high-power industrial CO2 laser optics. Today, we have diversified into numerous business units for near-infrared optics, YAG components, and telecommunications components (VLOC); defense and aerospace optics (Exotic Electro-Optics); selenium and tellurium metals and products (PRM); thermoelectric cooling devices (Marlow Industries); silicon carbide (II-VI WBG); and advanced...

6 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 7 II-VI Infrared. The name is synonymous with the world’s greatest CO2 laser optics and infrared optical materials. But what, exactly, does the name mean? The Roman numerals “II-VI” refer to Column II and Column VI of the Periodic Table of Elements. By chemically combining elements from Column II and Column VI, we produce the infrared optical crystalline compounds zinc selenide, zinc sulfide, and zinc sulfide MultiSpectral. These compounds, and others created from Column II and Column VI...

8 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 9

Crystal Growth Optics Fabrication Diamond Turning Thin-Film Coating Optical Assembly Optical Design & Engineering Quality Assurance International Sales & Support 10 12 14 16 20 21 22 23

12 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 13 II-VI Incorporated was founded in 1971 to supply better materials to infrared optics producers. Initially starting with cadmium telluride, II-VI gravitated to producing zinc selenide and zinc sulfide during the 1980s. II-VI produces zinc selenide and zinc sulfide by using a process called chemical vapor deposition (CVD). In specially designed furnaces, zinc vapors are reacted with hydrogen selenide or hydrogen sulfide gas to produce zinc selenide or zinc sulfide, respectively. The reaction...

14 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 15 Typical polishing specifications utilized by the optical fabrication department include: • Diameters: 4 to 200 mm typical, larger available upon request • Thickness: 0.5 to 50 mm • Angles: < 5 arc seconds • Surface Accuracy: to ½0 wave • Parallelism: to 2 arc seconds II-VI can also polish optical material to precise customer specifications. Materials fabricated at our facilities include: • Zinc selenide (ZnSe) • Zinc sulfide (ZnS) • Zinc sulfide MultiSpectral (ZnS MS) • Germanium (Ge)...

16 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 17 We established the II-VI diamond turning facility in 1988, with a Pneumo MSG500 flycutter purchase. Today, we are an industry leader in diamond-turned components for commercial, military, and aerospace customers. Our facility offers: • Single- and dual-axis flycutting • Two-axis turning • Slow- and fast-tool servos for non-rotationally symmetric geometries • High-purity aluminum plated (Alumiplate™) mirrors • Prototype to production quantities • Thermal cycling • Dedicated cleaning •...

18 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 19 THIN-FILM COATING II-VI is the recognized leader in designing and producing consistently low-absorption coatings for high-power CO2 laser optics. Our thin-film coating facility completes our vertically integrated component capability to allow optical fabrication, diamond turning, and coating to be performed at the same location. Having a combined 170 years of experience, the II-VI coating department staff offers a broad coating range for CO2 laser and infrared imaging applications. The...

20 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 21 THIN-FILM COATING We offer both high-reflective and transmission type coatings for all beam delivery applications. Reflective Coatings • MMR: our highest-reflection bend mirror coatings • ATFR: minimizes laser feedback • RPR: controls polarization and provides precision phase shift o 90º o 45º o 22.5º • TRZ: maintains incident polarization Substrates: ZnSe, Ge, GaAs Partial Reflectors Our consistent, low-absorbing coatings offer a wide wavelength range and reflection values for 0.25 to...

22 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 23 OPTICAL ASSEMBLY II-VI’s optical assembly capability allows customers to minimize optic handling, thereby reducing risks such as damage and contamination. We offer these vertically integrated capabilities: • Pro/ENGINEER® 3D modeling • Precision machine shop work • Plating processes • Diamond turning • Helium leak testing • Laminar flow hood • Optical testing and alignment II-VI will design and manufacture custom prototypes or high-volume production quantities. Our engineers can design...

24 888.558.1504 (toll-free in USA and Canada) 724.352.1504 (phone) 724.352.4980 (fax) www.iiviinfrared.com 25 QUALITY ASSURANCE The quality assurance program at II-VI includes thorough testing, documentation, and statistical analysis to ensure that each optic and component performs to established standards. Dimensional and surface testing equipment, both optical and mechanical, coupled with spectrophotometers and precision reflectivity and transmission test systems, guarantee consistent quality. The material absorption is measured by custom designed laser calorimeters. The sales and technical...

Materials Lenses Windows Resonator Optics (Output Couplers/Rear Mirrors/ Band Selectives) Mirrors Phase Retarders Polarizers Beam Expanders Beamsplitters Beam Combiners Diamond-Turned Custom Optics CO2 Laser Consumables 26 38 48 51 54 62 68 70 71 73 74 85