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Substrate-transferred crystalline coatings represent an entirely new concept in high-performance optical interference coatings. This technology was developed as a solution to the long-standing thermal noise limitation found in ultrastable optical interferometers, impacting cavity-stabilized laser systems for precision spectroscopy and optical atomic clocks, as well as interferometric gravitational-wave...
Substrate-transferred crystalline coatings are a groundbreaking new concept for the fabrication of ultralow-loss mirrors. The low defect density single-crystal nature of these semiconductor supermirrors enables the lowest mechanical losses and hence unmatched Brownian noise performance [1], which currently limits the stability of precision optical interferometers. Another outstanding feature of these...
Optical vortices, carrying a doughnut-shaped spatial form and an orbital angular momentum assigned with topological charge), have received attention in diverse application fields, for instance, high spatial resolution microscopies, quantum communications, and chiral materials processing. The aforementioned applications require highly pulsed optical vortex sources with wavelength versatility. In general,...
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