Publication: Direct femtosecond-laser writing of optical-range nanoscale metagratings/metacouplers on diamond surfaces
Дата
2019
Авторы
Levchenko, A. O.
Danilov, P. A.
Smirnov, N. A.
Rudenko, A. A.
Kudryashov, S. I.
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Volume Title
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Аннотация
© 2019 Author(s).A natural diamond surface was nanopatterned in a subablative scanning mode by multiple tightly focused 515-nm, 300-fs laser pulses, resulting in regular surface metagratings (nanoripples) with a subwavelength period of Λ ∼100 nm, an almost undistorted crystalline structure, free from sp2-carbon, oriented perpendicular to the laser polarization, and stackable both along and normal to their stripes. In the visible-near-IR ranges (400-800 nm), these metagratings demonstrate the pronounced resonant antireflective effect in the wavelength range near ∼4Λ, while the overall specular reflectance/transmittance is considerably diminished with respect to both the simulation results and the reference diamond surface, indicating strong (∼50%) coupling/scattering of light inside the crystal. Our modeling indicates the laser wavelength-dependent plasmon-based tunability of metagrating periods, implying the corresponding tunability of their spectral response.
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Цитирование
Direct femtosecond-laser writing of optical-range nanoscale metagratings/metacouplers on diamond surfaces / Levchenko, A.O. [et al.] // Applied Physics Letters. - 2019. - 115. - № 7. - 10.1063/1.5114630
URI
https://www.doi.org/10.1063/1.5114630
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https://openrepository.mephi.ru/handle/123456789/18548
https://www.scopus.com/record/display.uri?eid=2-s2.0-85070676537&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000481469900053
https://openrepository.mephi.ru/handle/123456789/18548