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 presentations 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
Indium Corporation's Solder Tubes join and protect terminating electrical joints within a heat shrink termination device.
Re-exploring solder paste's "five ball rule" in SMT stencil printing.
Brook Sandy-Smith, Technical Support Engineer for PCB Assembly Materials, and Phil Zarrow discuss the use of pallets when wave soldering and its impact on flux creep, which can potentially causing electrochemical migration. They also discuss the methods that can be used to uncover such issues.
From One Engineer to Another®
All of Indium Corporation’s products and solutions are designed to be commercially available
unless specifically stated otherwise.