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Collaborators from industry and academia have demonstrated high-performance laser mirrors in the mid-infrared range that absorb fewer than 10 out of a million photons. The achievement, enabled by recent advancements in optical coating technology, has the potential open applications in medicine and environmental monitoring.
The coating process involves the deposition of single-crystal stacks of high-purity semiconductor materials via an epitaxial growth process. The monocrystalline multilayers that are produced are then transferred onto curved silicon optical substrates by a proprietary bonding process. The completed mirrors were tested at both the Christian Doppler Laboratory (CDL) and NIST.
“This new process enables…READ MORE