Germanium Glass Window

It is a lustrous hard brittle grayish white metalloid in the carbon group chemically similar to its group neighbours silicon and tin pure germanium is a semiconductor with an appearance similar to elemental silicon.

Germanium glass window.

Thorlabs precision germanium ge windows are offered in ø1 2 and ø1 sizes. We manufacture and supply axicons made from bk7 glass fused silica and other materials. Germanium also has high opacity across the entire visible spectrum making the windows ideal for applications where transmission of ir wavelengths only is desired. Germanium is subject to thermal runaway meaning that the transmission decreases as temperature increases.

Germanium windows opaque in the uv and visible parts of the spectrum have a broad transmission range and are well suited for ir applications. Germanium windows and lenses are highly sensitive to temperatures above 70 c when it will become opaque. Germanium optical windows have good transmittance from 2 to 16 µm uncoated and very low peak absorption making the material an excellent candidate for use in c02 laser cavities. Germanium lenses have a high refractive index making it essential to add anti reflection coating to improve its transmission.

Germanium has a rugged appearance and is. Germanium s high density also makes it heavy something to be considered when designing it into optical systems where weight is a. Germanium is grown using the czochralski technique by a small number of manufacturers in belgium usa china and russia. Like silicon germanium naturally reacts and forms complexes with oxygen in nature.

Rutile tio2 coupling prisms. The refractive index of germanium changes rapidly with temperature and the material becomes opaque at all wavelengths a little above 350k as the band gap floods with thermal electrons. Download brochure request a quote. Germanium window ge window widely used in ir sensors thermal image medical and other applications.

The knoop hardness of germanium 780 is approximately. They are available uncoated or with an ar coating on both sides that provides 2 average reflectance from 1 9 to 6 µm offered in ø1 size only or 1 average reflectance from 7 to. Ir polished germanium ge optical window 25 4mm ø x 1mm 1 inch ø x 1mm 44 0 1202 307650 or email protected 0 in stock. Knight optical stock a range of germanium windows dlc ar coated for 7 12 µm we can also offer custom germanium windows to your specific requirement.

As such these germanium windows should be used at temperatures below 100 c. Germanium is a chemical element with the symbol ge and atomic number 32. Other germanium components we can also offer are germanium lenses germanium prisms and germanium blanks to your specification for a range of applications. Germanium s high density 5 33 g cm 3 should be considered when designing for weight sensitive systems.