Enhancement of the second harmonic signal of nonlinear crystals by self-assembled gold nanoparticles
In second harmonic generation (SHG), the energy of two incoming photons, e.g., from a femtosecond laser, can be combined in one outgoing photon of twice the energy, e.g., by means of a nonlinear crystal. The SHG efficiency, however, is limited. In this work, the harvested signal is maximized by comp...
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| Veröffentlicht in: | The Journal of chemical physics 2020-03, Vol.152 (10), p.104711-104711 |
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| container_title | The Journal of chemical physics |
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| creator | Gürdal, Emre Horneber, Anke Shaqqura, Nadim Meixner, Alfred J. Kern, Dieter P. Zhang, Dai Fleischer, Monika |
| description | In second harmonic generation (SHG), the energy of two incoming photons, e.g., from a femtosecond laser, can be combined in one outgoing photon of twice the energy, e.g., by means of a nonlinear crystal. The SHG efficiency, however, is limited. In this work, the harvested signal is maximized by composing a hybrid system consisting of a nonlinear crystal with a dense coverage of plasmonic nanostructures separated by narrow gaps. The method of self-assembled diblock-copolymer-based micellar lithography with subsequent electroless deposition is employed to cover the whole surface of a lithium niobate (LiNbO3) crystal. The interaction of plasmonic nanostructures with light leads to a strong electric near-field in the adjacent crystal. This near-field is harnessed to enhance the near-surface SHG signal from the nonlinear crystal. At the plasmon resonance of the gold nanoparticles, a pronounced enhancement of about 60-fold SHG is observed compared to the bare crystal within the confocal volume of a laser spot. |
| doi_str_mv | 10.1063/1.5139893 |
| format | Article |
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The SHG efficiency, however, is limited. In this work, the harvested signal is maximized by composing a hybrid system consisting of a nonlinear crystal with a dense coverage of plasmonic nanostructures separated by narrow gaps. The method of self-assembled diblock-copolymer-based micellar lithography with subsequent electroless deposition is employed to cover the whole surface of a lithium niobate (LiNbO3) crystal. The interaction of plasmonic nanostructures with light leads to a strong electric near-field in the adjacent crystal. This near-field is harnessed to enhance the near-surface SHG signal from the nonlinear crystal. 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At the plasmon resonance of the gold nanoparticles, a pronounced enhancement of about 60-fold SHG is observed compared to the bare crystal within the confocal volume of a laser spot.</description><subject>Crystals</subject><subject>Electroless deposition</subject><subject>Electroless plating</subject><subject>Gold</subject><subject>Hybrid systems</subject><subject>Lithium niobates</subject><subject>Nanoparticles</subject><subject>Nanostructure</subject><subject>Photons</subject><subject>Physics</subject><subject>Second harmonic generation</subject><subject>Self-assembly</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp90E1LJDEQBuAgKzp-HPYPLIG9rAutVcl0p3MUUVcQvOi5SacrTks6mU16hPn3tjujwgpeUoc8vEW9jH1HOEWo5Bmelih1reUOmyHUulCVhm9sBiCw0BVU--wg5ycAQCXme2xfClQoAGesuwwLEywNFEYeHR8XxDPZGDq-MGmIobc894_B-NffEIPvA5nEbVrn0fjM2_XkvStMzjS0njr-GH3HgwlxadLYW0_5iO26ydLxdh6yh6vL-4s_xe3d9c3F-W1hZS3HYo6yJNPaSrvSWRLWlk4C1pJqsBZr54BcVxMJp7HV2uB8Xum21UaUhgjkIfu1yV2m-HdFeWyGPlvy3gSKq9wIqVSlVK3ERH_-R5_iKk1n_lMVCDW9kzrZKJtizolcs0z9YNK6QWheq2-w2VY_2R_bxFU7UPcu37qewO8NyLYfzdjH8G6eY_pIapad-wp_Xv0CQ2ubTg</recordid><startdate>20200314</startdate><enddate>20200314</enddate><creator>Gürdal, Emre</creator><creator>Horneber, Anke</creator><creator>Shaqqura, Nadim</creator><creator>Meixner, Alfred J.</creator><creator>Kern, Dieter P.</creator><creator>Zhang, Dai</creator><creator>Fleischer, Monika</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-8582-2860</orcidid><orcidid>https://orcid.org/0000-0001-5388-0257</orcidid><orcidid>https://orcid.org/0000-0002-2082-9073</orcidid><orcidid>https://orcid.org/0000000220829073</orcidid><orcidid>https://orcid.org/0000000185822860</orcidid><orcidid>https://orcid.org/0000000153880257</orcidid></search><sort><creationdate>20200314</creationdate><title>Enhancement of the second harmonic signal of nonlinear crystals by self-assembled gold nanoparticles</title><author>Gürdal, Emre ; Horneber, Anke ; Shaqqura, Nadim ; Meixner, Alfred J. ; Kern, Dieter P. ; Zhang, Dai ; Fleischer, Monika</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-4135eabc69f5fce2cc5f30183e80cc18ff0efd8ee2f91b99a14469bb9a25aee03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Crystals</topic><topic>Electroless deposition</topic><topic>Electroless plating</topic><topic>Gold</topic><topic>Hybrid systems</topic><topic>Lithium niobates</topic><topic>Nanoparticles</topic><topic>Nanostructure</topic><topic>Photons</topic><topic>Physics</topic><topic>Second harmonic generation</topic><topic>Self-assembly</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gürdal, Emre</creatorcontrib><creatorcontrib>Horneber, Anke</creatorcontrib><creatorcontrib>Shaqqura, Nadim</creatorcontrib><creatorcontrib>Meixner, Alfred J.</creatorcontrib><creatorcontrib>Kern, Dieter P.</creatorcontrib><creatorcontrib>Zhang, Dai</creatorcontrib><creatorcontrib>Fleischer, Monika</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gürdal, Emre</au><au>Horneber, Anke</au><au>Shaqqura, Nadim</au><au>Meixner, Alfred J.</au><au>Kern, Dieter P.</au><au>Zhang, Dai</au><au>Fleischer, Monika</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhancement of the second harmonic signal of nonlinear crystals by self-assembled gold nanoparticles</atitle><jtitle>The Journal of chemical physics</jtitle><addtitle>J Chem Phys</addtitle><date>2020-03-14</date><risdate>2020</risdate><volume>152</volume><issue>10</issue><spage>104711</spage><epage>104711</epage><pages>104711-104711</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>In second harmonic generation (SHG), the energy of two incoming photons, e.g., from a femtosecond laser, can be combined in one outgoing photon of twice the energy, e.g., by means of a nonlinear crystal. 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| subjects | Crystals Electroless deposition Electroless plating Gold Hybrid systems Lithium niobates Nanoparticles Nanostructure Photons Physics Second harmonic generation Self-assembly |
| title | Enhancement of the second harmonic signal of nonlinear crystals by self-assembled gold nanoparticles |
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