期刊
NATURE COMMUNICATIONS
卷 13, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-022-30335-2
关键词
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资金
- National Science Foundation under NSF [1541959]
- Air Force Office of Scientific Research (MURI) [FA9550-14-1-0389]
- Defense Advanced Research Projects Agency (DARPA) [W31P4Q-15-1-0013]
- STC Center for Integrated Quantum Materials
- NSF [DMR-1231319]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- AQT Intelligent Quantum Networks and Technologies (INQNET) research program
- National Science Foundation Graduate Research Fellowship [DGE1144152]
This study demonstrates the creation of highly reflective mirrors that can withstand high-power laser irradiation without damage. These mirrors are made of single-crystal diamond with etched nanostructures, and exhibit reflectivities of over 98%. The findings have the potential to improve or create new applications for high-power lasers.
High-power continuous-wave (CW) lasers are used in a variety of areas including industry, medicine, communications, and defense. Yet, conventional optics, which are based on multi-layer coatings, are damaged when illuminated by high-power CW laser light, primarily due to thermal loading. This hampers the effectiveness, restricts the scope and utility, and raises the cost and complexity of high-power CW laser applications. Here we demonstrate monolithic and highly reflective mirrors that operate under high-power CW laser irradiation without damage. In contrast to conventional mirrors, ours are realized by etching nanostructures into the surface of single-crystal diamond, a material with exceptional optical and thermal properties. We measure reflectivities of greater than 98% and demonstrate damage-free operation using 10 kW of CW laser light at 1070 nm, focused to a spot of 750 mu m diameter. In contrast, we observe damage to a conventional dielectric mirror when illuminated by the same beam. Our results initiate a new category of optics that operate under extreme conditions, which has potential to improve or create new applications of high-power lasers. Mirrors that demonstrate 98% reflectivity and withstand 10 kilowatts of focused continuous-wave laser light are created by nanoscale fabrication of single-crystal diamond. The work finds applications in medicine, defence, industry, and communications.
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