Transverse magneto-optical Kerr effect enhanced by surface plasmon resonances at the critical coupling condition
Nanostructures possessing plasmonic and magnetic properties can enhance the transverse magneto-optical Kerr effect (TMOKE) by exciting surface plasmon resonances (SPRs). This provides a promising platform for magneto-optical SPR sensors with significantly improved sensing performance. Here, we propo...
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| Veröffentlicht in: | Journal of applied physics 2024-08, Vol.136 (8) |
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| container_title | Journal of applied physics |
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| creator | Zhang, Pengsen Li, Lixia Zong, Xueyang Cui, Lin Lei, Fugui Liu, Yufang |
| description | Nanostructures possessing plasmonic and magnetic properties can enhance the transverse magneto-optical Kerr effect (TMOKE) by exciting surface plasmon resonances (SPRs). This provides a promising platform for magneto-optical SPR sensors with significantly improved sensing performance. Here, we propose a high-performance magneto-optical SPR sensor, which consists of a bilayer Au/Co grating placed on a gold film. By tuning the structural parameters, a Fano-like TMOKE spectrum with a linewidth of only 0.0135 nm and an amplitude approaching the theoretical maximum is obtained. We attribute the optimal TMOKE signal achieved by the sensor to the critical coupling concept which is associated with the trade-off between scattering and intrinsic decay rates of the system. The optimized nanostructure sensor demonstrates a sensitivity of 1432 nm/RIU to refractive index fluctuations as small as 0.0001 in air, and all figures of merit (FOM) up to 105 RIU−1, making it suitable for gas sensor fabrication. |
| doi_str_mv | 10.1063/5.0221556 |
| format | Article |
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This provides a promising platform for magneto-optical SPR sensors with significantly improved sensing performance. Here, we propose a high-performance magneto-optical SPR sensor, which consists of a bilayer Au/Co grating placed on a gold film. By tuning the structural parameters, a Fano-like TMOKE spectrum with a linewidth of only 0.0135 nm and an amplitude approaching the theoretical maximum is obtained. We attribute the optimal TMOKE signal achieved by the sensor to the critical coupling concept which is associated with the trade-off between scattering and intrinsic decay rates of the system. 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The optimized nanostructure sensor demonstrates a sensitivity of 1432 nm/RIU to refractive index fluctuations as small as 0.0001 in air, and all figures of merit (FOM) up to 105 RIU−1, making it suitable for gas sensor fabrication.</description><subject>Bilayers</subject><subject>Coupling</subject><subject>Decay rate</subject><subject>Figure of merit</subject><subject>Gas sensors</subject><subject>Kerr magnetooptical effect</subject><subject>Magnetic properties</subject><subject>Magnetic resonance</subject><subject>Nanostructure</subject><subject>Optical properties</subject><subject>Parameter sensitivity</subject><subject>Refractivity</subject><subject>Surface plasmon resonance</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kEtrwzAQhEVpoenj0H8g6KkFpysrsqxjCX3RQA_N3cjyKnFwJFeSC_n3dXDOPe2y-zHDDCF3DOYMCv4k5pDnTIjijMwYlCqTQsA5mQHkLCuVVJfkKsYdAGMlVzPSr4N28RdDRLrXG4fJZ75PrdEd_cQQKFqLJlF0W-0MNrQ-0DgEqw3SvtNx7x0NGL07fiPViaYtUhPaScL4oe9atxkX14w3727IhdVdxNvTvCbfry_r5Xu2-nr7WD6vMpMzmTIFoskFY1iAqFmpDK-1rAVytgBuBaDgssFGGV3rQtm8VoXMTamtLLAp-DW5n1T74H8GjKna-SG40bDioKRYSMXZSD1MlAk-xoC26kO71-FQMaiOdVaiOtU5so8TG02b9DHJP_Af3id2VQ</recordid><startdate>20240828</startdate><enddate>20240828</enddate><creator>Zhang, Pengsen</creator><creator>Li, Lixia</creator><creator>Zong, Xueyang</creator><creator>Cui, Lin</creator><creator>Lei, Fugui</creator><creator>Liu, Yufang</creator><general>American Institute of Physics</general><scope>AJDQP</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0009-0008-0464-9057</orcidid><orcidid>https://orcid.org/0009-0005-8122-7139</orcidid><orcidid>https://orcid.org/0000-0003-4830-7899</orcidid><orcidid>https://orcid.org/0000-0003-1896-8864</orcidid></search><sort><creationdate>20240828</creationdate><title>Transverse magneto-optical Kerr effect enhanced by surface plasmon resonances at the critical coupling condition</title><author>Zhang, Pengsen ; Li, Lixia ; Zong, Xueyang ; Cui, Lin ; Lei, Fugui ; Liu, Yufang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c217t-905d2511e605b189c3ba7b5e31403f50e537ded9caba69f2b9672c8af76ed63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Bilayers</topic><topic>Coupling</topic><topic>Decay rate</topic><topic>Figure of merit</topic><topic>Gas sensors</topic><topic>Kerr magnetooptical effect</topic><topic>Magnetic properties</topic><topic>Magnetic resonance</topic><topic>Nanostructure</topic><topic>Optical properties</topic><topic>Parameter sensitivity</topic><topic>Refractivity</topic><topic>Surface plasmon resonance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Pengsen</creatorcontrib><creatorcontrib>Li, Lixia</creatorcontrib><creatorcontrib>Zong, Xueyang</creatorcontrib><creatorcontrib>Cui, Lin</creatorcontrib><creatorcontrib>Lei, Fugui</creatorcontrib><creatorcontrib>Liu, Yufang</creatorcontrib><collection>AIP Open Access Journals</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Pengsen</au><au>Li, Lixia</au><au>Zong, Xueyang</au><au>Cui, Lin</au><au>Lei, Fugui</au><au>Liu, Yufang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transverse magneto-optical Kerr effect enhanced by surface plasmon resonances at the critical coupling condition</atitle><jtitle>Journal of applied physics</jtitle><date>2024-08-28</date><risdate>2024</risdate><volume>136</volume><issue>8</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Nanostructures possessing plasmonic and magnetic properties can enhance the transverse magneto-optical Kerr effect (TMOKE) by exciting surface plasmon resonances (SPRs). 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| source | Alma/SFX Local Collection |
| subjects | Bilayers Coupling Decay rate Figure of merit Gas sensors Kerr magnetooptical effect Magnetic properties Magnetic resonance Nanostructure Optical properties Parameter sensitivity Refractivity Surface plasmon resonance |
| title | Transverse magneto-optical Kerr effect enhanced by surface plasmon resonances at the critical coupling condition |
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