Infrared

Infrared Crystals

Barium Fluoride - BaF2

Barium Fluoride is grown by vacuum Stockbarger technique in diameters up to 240 mm. The material is susceptible to thermal shock. It is transparent in the wide spectrum band. Available in both optical and scintillator grades. The scintillator grade material has typical absorbance of 0.2 at 190 nm (transmissivity of 0.013mm-1) through a 60 mm path length, and 0.08 at 300 nm (transmissivity of 0.015mm-1) Applications include windows, lenses of special types of objectives, mirror substrate in optical systems operating in UV and IR spectrum band. Diameters up to 240 mm for transmission to 12.5 um.

Cadmium Selenide - CdSe

Seeded vapor phase crystals are grown without contact with reactor walls, up to 2" diameter. Substrates for AII-BVI epitaxy, epitaxy, polarizations and windows for special IR range. Click here for III-V substrate properties.

Cadmium Sulfide - CdS

Seeded vapor phase crystals are grown without contact with reactor walls, up to 2" diameter. Substrates for AII-BVI epitaxy, polarizers and windows for special IR range.

Cadmium Telluride - CdTe

CdTe and mixed crystals up to 3" diameter for growing epitaxial layers of MCT for IR detectors, special windows, and solar cells. Grown using Bridgeman with Cd-reservoir.

CdZnTe

CdTeSe

Calcium Fluoride - CaF2

Calcium Fluoride is grown by vacuum Stockbarger technique in diameters up to 350 mm. Widely used in IR applications such as spectroscopic accessories, prisms and lenses. CaF has a cubic structure with a lattice constant of 5.462 A and a cleavage plane of [111]. The transmission range is 0.13 to 10 microns. Three grades available UV, visible, and infrared transmission. Sizes from 150 to 350 mm diameter.

Indium Phosphide - InP

Doped and undoped material available in both P and N types up to 3" diameter.High quality InP single crystal wafers, N and P types, are grown by LEC and precision wafered before epitaxial polishing. Wafers are available doped and undoped in standard sizes of 1.5, 2.0 and 3.0". Semi insulating InP is doped with Fe and are grown by LEC for advanced microwave devices.

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Lithium Fluoride - LiF

Three grades available UV, visible, and infrared transmission. Sizes from 150 to 250 mm diameter.

Magnesium Fluoride - MgF2

For UV and IR transmission from 0.13 um to 7.0 um and diameters up to 120 mm

Mercury Cadmium Telluride - HgCdTe (MCT)

Bulk HgCdTe material for IR detectors. Data -High quality P and N type epitaxial grown HgCdTe on CdTe or CdZnTe substrates. Available wavelengths of 3 to 20 um and section up to 30 x 30 mm.

Silver Gallium Selenide - AgGaSe2

AgGaSe2 is an efficient frequency doubling crystal for infrared radiation. It has low optical absorption, low scattering and low wavefront distortion. AgGaSe2 has the highest figure of merit for nonlinear interactions in the near and deep infrared. Applications for both crystals include differential absorption LIDAR, surgical procedures, and IR wave plates.

Silver Gallium Sulfide

Sodium Chloride - NaCl

Available up to 120 mm diameter polished for windows and lens.

Zinc Selenide - ZnSe (CVD)

Zinc Selenide is chemically inert, non-hygroscopic, highly pure, theoretically dense and easily machined. It has extremely low bulk losses due to absorption and scatter, has a high resistance to thermal shock and is stable in virtually all environments. It is available in circular blanks and sheet material are available in stock to meet your most urgent delivery requirements. Custom diameters, rectangles, CNC-profiled blanks, generated lens blanks, prisms, and near-net shape domes can also be made to your specifications. Click here for zinc selenide properties

Zinc Sulfide - ZnS

Seeded vapor phase crystals are grown without contact with reactor walls, up to 40 mm diameter. Substrates for AII-BVIepitaxy and windows for special IR range.

Zinc Telluride - ZnTe