Germanium dioxide is well-known as a glass-forming material; it has the ability to form tetrahedral units (similar to those formed by silicon dioxide). Since the cation-to-anion ratio of GeO2 is in the right range, many GeO2 based compositions form glasses on melting and cooling.
The different forms of GeO2 (vitreous, hexagonal, tetragonal) lead to different corresponding infra-red spectra, but all are optically transparent over a wide spectral range between 280 nm and 5000 nm.
In addition, GeO2 based glasses have a higher coefficient of thermal expansion than silica- or boron-based glasses, and thus provide for a much better performance when vacuum seals (to brass or copper) are required.
Pure germanium is used for lenses and windows in IR systems that operate at even higher wavelengths (from 2 to 12 microns).
Gallium and gallium oxide can be used to increase the refractive index of glass and are used in the manufacture of lenses and optical mirrors. Optical mirrors made from gallium have high reflectivity and are stable at high temperatures.
Optical Lens Technical Documents
No whitepapers to display
No application notes to display
Product Data Sheets
No product data sheets to display
Safety Data Sheets
No safety data sheets to display
Indium Corporation Blog Posts
Folks, Some years ago, a leading IC manufacturer decided that their R&D effort could benefit if analyzed for possible improvement - by hiring professionals from the arts (e.g. singers, actors, artists etc.) In this spirit, I am going not quite so far from electronics assembly, to ask one…
Pure indium sputtering targets are used for some very interesting applications: Indium sputtering targets are commonly used to deposit the indium layers in CIS and CIGS solar cells. These targets can be co-deposited along with copper and gallium, and combined with sulfur/selenium to form the cell’s…
Indium metal powder is mixed with flux for application by dispensing or printing equipment. This mixture is referred to as solder paste. Lucky for you, Indium Corporation is the technology leader in deposition technology for solder pastes. We have local Technical Support Engineers near you to…
Product Manager of Compounds
From One Engineer to Another®
All of Indium Corporation’s products and solutions are designed to be commercially available
unless specifically stated otherwise.
Indium Corporation — ©1996–2013. All Rights Reserved. | Site Map