Germanium Glass Window

Germanium window ge window widely used in ir sensors thermal image medical and other applications.

Germanium glass window. Germanium is a very hard high density material characteristics that are advantageous where robustness is needed. Germanium is a chemical element with the symbol ge and atomic number 32. The knoop hardness of germanium 780 is approximately. Germanium windows and lenses are highly sensitive to temperatures above 70 c when it will become opaque.

Germanium has a rugged appearance and is. 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. As such these germanium windows should be used at temperatures below 100 c. 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.

Other germanium components we can also offer are germanium lenses germanium prisms and germanium blanks to your specification for a range of applications. Germanium also has high opacity across the entire visible spectrum making the windows ideal for applications where transmission of ir wavelengths only is desired. 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. Rutile tio2 coupling prisms.

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. 27 00 each for quantities of 10 or more please phone to discuss discount. Germanium s high density 5 33 g cm 3 should be considered when designing for weight sensitive systems.

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. Germanium windows opaque in the uv and visible parts of the spectrum have a broad transmission range and are well suited for ir applications. We manufacture and supply axicons made from bk7 glass fused silica and other materials. 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.

Download brochure request a quote. Germanium s high density also makes it heavy something to be considered when designing it into optical systems where weight is a. Germanium is subject to thermal runaway meaning that the transmission decreases as temperature increases. Germanium is grown using the czochralski technique by a small number of manufacturers in belgium usa china and russia.