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Shilina PV, Ignatyeva DO, Kapralov PO, Sekatskii SK, Nur-E-Alam M, Vasiliev M, Alameh K, Achanta VG, Song Y, Hamidi SM, Zvezdin AK, Belotelov VI. Nanophotonic structures with optical surface modes for tunable spin current generation. NANOSCALE 2021; 13:5791-5799. [PMID: 33704301 DOI: 10.1039/d0nr08692d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We propose a novel type of photonic-crystal (PC)-based nanostructures for efficient and tunable optically-induced spin current generation via the spin Seebeck and inverse spin Hall effects. It has been experimentally demonstrated that optical surface modes localized at the PC surface covered by ferromagnetic layer and materials with giant spin-orbit coupling (SOC) notably increase the efficiency of the optically-induced spin current generation, and provides its tunability by modifying the light wavelength or angle of incidence. Up to 100% of the incident light power can be transferred to heat within the SOC layer and, therefore, to the spin current. Importantly, the high efficiency becomes accessible even for ultra-thin SOC layers. Moreover, the surface patterning of the PC-based spintronic nanostructure allows for the local generation of spin currents at the pattern scales rather than the diameter of the laser beam.
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Affiliation(s)
- P V Shilina
- National Research University Higher School of Economics, Moscow 101000, Russia.
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Ignatyeva D, Kapralov P, Golovko P, Shilina P, Khramova A, Sekatskii S, Nur-E-Alam M, Alameh K, Vasiliev M, Kalish A, Belotelov V. Sensing of Surface and Bulk Refractive Index Using Magnetophotonic Crystal with Hybrid Magneto-Optical Response. SENSORS (BASEL, SWITZERLAND) 2021; 21:1984. [PMID: 33799799 PMCID: PMC8000496 DOI: 10.3390/s21061984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 01/19/2023]
Abstract
We propose an all-dielectric magneto-photonic crystal with a hybrid magneto-optical response that allows for the simultaneous measurements of the surface and bulk refractive index of the analyzed substance. The approach is based on two different spectral features of the magneto-optical response corresponding to the resonances in p- and s-polarizations of the incident light. Angular spectra of p-polarized light have a step-like behavior near the total internal reflection angle which position is sensitive to the bulk refractive index. S-polarized light excites the TE-polarized optical Tamm surface mode localized in a submicron region near the photonic crystal surface and is sensitive to the refractive index of the near-surface analyte. We propose to measure a hybrid magneto-optical intensity modulation of p-polarized light obtained by switching the magnetic field between the transverse and polar configurations. The transversal component of the external magnetic field is responsible for the magneto-optical resonance near total internal reflection conditions, and the polar component reveals the resonance of the Tamm surface mode. Therefore, both surface- and bulk-associated features are present in the magneto-optical spectra of the p-polarized light.
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Affiliation(s)
- Daria Ignatyeva
- Russian Quantum Center, 121205 Moscow, Russia; (D.I.); (P.K.); (A.K.); (A.K.)
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Institute of Physics and Technology, V.I. Vernadsky Crimean Federal University, 295007 Simferopol, Russia
| | - Pavel Kapralov
- Russian Quantum Center, 121205 Moscow, Russia; (D.I.); (P.K.); (A.K.); (A.K.)
| | - Polina Golovko
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Polina Shilina
- Faculty of Physics, National Research University Higher School of Economics, 101000 Moscow, Russia;
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, 117303 Dolgoprudny, Russia
| | - Anastasiya Khramova
- Russian Quantum Center, 121205 Moscow, Russia; (D.I.); (P.K.); (A.K.); (A.K.)
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Sergey Sekatskii
- Laboratory of Biological Electron Microscopy, Institute of the Physics of Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland;
| | - Mohammad Nur-E-Alam
- Electron Science Research Institute, Edith Cowan University, Perth, WA 6027, Australia; (M.N.-E.-A.); (K.A.); (M.V.)
| | - Kamal Alameh
- Electron Science Research Institute, Edith Cowan University, Perth, WA 6027, Australia; (M.N.-E.-A.); (K.A.); (M.V.)
| | - Mikhail Vasiliev
- Electron Science Research Institute, Edith Cowan University, Perth, WA 6027, Australia; (M.N.-E.-A.); (K.A.); (M.V.)
| | - Andrey Kalish
- Russian Quantum Center, 121205 Moscow, Russia; (D.I.); (P.K.); (A.K.); (A.K.)
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Vladimir Belotelov
- Russian Quantum Center, 121205 Moscow, Russia; (D.I.); (P.K.); (A.K.); (A.K.)
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Institute of Physics and Technology, V.I. Vernadsky Crimean Federal University, 295007 Simferopol, Russia
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Kovalevich T, Belharet D, Robert L, Ulliac G, Kim MS, Herzig HP, Grosjean T, Bernal MP. Bloch surface waves at the telecommunication wavelength with lithium niobate as the top layer for integrated optics. APPLIED OPTICS 2019; 58:1757-1762. [PMID: 30874213 DOI: 10.1364/ao.58.001757] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/28/2019] [Indexed: 06/09/2023]
Abstract
Lithium niobate (LN)-based devices are widely used in integrated and nonlinear optics. This material is robust and resistive to high temperatures, which makes the LN-based devices stable, but challenging to fabricate. In this work, we report on the design, manufacturing, and characterization of engineered dielectric media with thin-film LN (TFLN) on top for the coupling and propagation of electromagnetic surface waves at telecommunication wavelengths. The designed one-dimensional photonic crystal (1DPhC) sustains Bloch surface waves (BSWs) at the multilayer-air interface at 1550 nm wavelength with a propagation detected over a distance of 3 mm. The working wavelength and improved BSW propagation parameters open the way for exploration of nonlinear properties of BSW-based devices. It is also expected that these novel devices potentially would be able to modify BSW propagation and coupling by external thermal-electrical stimuli due to the improved quality of the TFLN top layer of 1DPhC.
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