Why Silicon Carbide Mirrors Are Replacing Glass in Space Telescopes and High-Power Lasers
For decades, optical mirrors were made from glass—fused silica, borosilicate, and Zerodur dominated everything from laboratory interferometers to space telescopes. Glass is polishable to nanometer precision and dimensionally stable under normal conditions, but it has fundamental limits. It is heavy, thermally sensitive, and structurally fragile. In applications where mirrors must...
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