Optical second harmonic generation analysis of the atomically stepped Au/TiO2 (320) interface
A gold thin film with the thickness of 2nm on the TiO2(320) substrate has been fabricated in a UHV chamber at the pressure of 2x10-7 Torr. We observed the second harmonic response from the Au/TiO2(320) interface and bare TiO2(320) as a function of the rotation angle around the surface normal by usin...
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| Veröffentlicht in: | AIP advances 2017-12, Vol.7 (12), p.125011-125011-10 |
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| container_title | AIP advances |
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| creator | Haque, Md Ehasanul Kobayashi, Daiki Tomatsu, Yuki Hien, Khuat Thi Thu Mizutani, Goro Rahman, Mohammad Mizanur Rutt, Harvey N. |
| description | A gold thin film with the thickness of 2nm on the TiO2(320) substrate has been fabricated in a UHV chamber at the pressure of 2x10-7 Torr. We observed the second harmonic response from the Au/TiO2(320) interface and bare TiO2(320) as a function of the rotation angle around the surface normal by using of a pulsed Nd3+:YAG laser as the excitation light at a photon energy of 1.17 eV and 2.33 eV. An isotropic response was observed from both samples for 1.17 eV photon energy excitation. In contrast, an anisotropic response was observed from both samples for 2.33 eV photon energy excitation. From the Au/TiO2(320) interface, anisotropic structure of SHG response was observed in the
[
2
¯
30
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direction for Pin/Pout polarization combination. Nonlinear susceptibility elements were decomposed and two groups of them were assigned as the main contribution from the step and terrace of the vicinal TiO2 surface. |
| doi_str_mv | 10.1063/1.5006847 |
| format | Article |
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[
2
¯
30
]
direction for Pin/Pout polarization combination. Nonlinear susceptibility elements were decomposed and two groups of them were assigned as the main contribution from the step and terrace of the vicinal TiO2 surface.</description><identifier>ISSN: 2158-3226</identifier><identifier>EISSN: 2158-3226</identifier><identifier>DOI: 10.1063/1.5006847</identifier><identifier>CODEN: AAIDBI</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Anisotropy ; Excitation ; Gold ; Harmonic response ; Second harmonic generation ; Semiconductor lasers ; Substrates ; Thickness ; Thin films ; Titanium dioxide ; YAG lasers</subject><ispartof>AIP advances, 2017-12, Vol.7 (12), p.125011-125011-10</ispartof><rights>Author(s)</rights><rights>2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c494t-7b2f0f2f032c52f93a1f9196ceb25d634cdf219d67531710a5b46a0048825fb93</citedby><cites>FETCH-LOGICAL-c494t-7b2f0f2f032c52f93a1f9196ceb25d634cdf219d67531710a5b46a0048825fb93</cites><orcidid>0000-0002-4534-9359 ; 0000-0003-4219-8281 ; 0000-0003-4953-5404</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,864,2100,27923,27924</link.rule.ids></links><search><creatorcontrib>Haque, Md Ehasanul</creatorcontrib><creatorcontrib>Kobayashi, Daiki</creatorcontrib><creatorcontrib>Tomatsu, Yuki</creatorcontrib><creatorcontrib>Hien, Khuat Thi Thu</creatorcontrib><creatorcontrib>Mizutani, Goro</creatorcontrib><creatorcontrib>Rahman, Mohammad Mizanur</creatorcontrib><creatorcontrib>Rutt, Harvey N.</creatorcontrib><title>Optical second harmonic generation analysis of the atomically stepped Au/TiO2 (320) interface</title><title>AIP advances</title><description>A gold thin film with the thickness of 2nm on the TiO2(320) substrate has been fabricated in a UHV chamber at the pressure of 2x10-7 Torr. We observed the second harmonic response from the Au/TiO2(320) interface and bare TiO2(320) as a function of the rotation angle around the surface normal by using of a pulsed Nd3+:YAG laser as the excitation light at a photon energy of 1.17 eV and 2.33 eV. An isotropic response was observed from both samples for 1.17 eV photon energy excitation. In contrast, an anisotropic response was observed from both samples for 2.33 eV photon energy excitation. From the Au/TiO2(320) interface, anisotropic structure of SHG response was observed in the
[
2
¯
30
]
direction for Pin/Pout polarization combination. Nonlinear susceptibility elements were decomposed and two groups of them were assigned as the main contribution from the step and terrace of the vicinal TiO2 surface.</description><subject>Anisotropy</subject><subject>Excitation</subject><subject>Gold</subject><subject>Harmonic response</subject><subject>Second harmonic generation</subject><subject>Semiconductor lasers</subject><subject>Substrates</subject><subject>Thickness</subject><subject>Thin films</subject><subject>Titanium dioxide</subject><subject>YAG lasers</subject><issn>2158-3226</issn><issn>2158-3226</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNp9kU1rHDEMhofQQkKaQ_-BIZeksInlrxkfQ-hHILCX9FiMxiMnXmbHU9tb2H_fSTakhUIFQkI8eoWkpvkI_Aq4kddwpTk3nWqPmhMBultJIcy7v_Lj5qyUDV9MWeCdOml-rOcaPY6skE_TwJ4wb9MUPXukiTLWmCaGE477EgtLgdUnYljT9rln3LNSaZ5pYDe764e4FuxCCn7J4lQpB_T0oXkfcCx09hpPm-9fPj_cflvdr7_e3d7cr7yyqq7aXgQeFpfCaxGsRAgWrPHUCz0YqfwQBNjBtFpCCxx1rwwuS3Sd0KG38rS5O-gOCTduznGLee8SRvdSSPnRYV72HMlpY7iVfpAKURH1VrQEprUaUBggWrTOD1pzTj93VKrbpF1eTlCcADAcjDLtQl0eKJ9TKZnC21Tg7vkZDtzrMxb204EtPtaXk77Bv1L-A7p5CP-D_1X-DbHhlQ0</recordid><startdate>201712</startdate><enddate>201712</enddate><creator>Haque, Md Ehasanul</creator><creator>Kobayashi, Daiki</creator><creator>Tomatsu, Yuki</creator><creator>Hien, Khuat Thi Thu</creator><creator>Mizutani, Goro</creator><creator>Rahman, Mohammad Mizanur</creator><creator>Rutt, Harvey N.</creator><general>American Institute of Physics</general><general>AIP Publishing LLC</general><scope>AJDQP</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-4534-9359</orcidid><orcidid>https://orcid.org/0000-0003-4219-8281</orcidid><orcidid>https://orcid.org/0000-0003-4953-5404</orcidid></search><sort><creationdate>201712</creationdate><title>Optical second harmonic generation analysis of the atomically stepped Au/TiO2 (320) interface</title><author>Haque, Md Ehasanul ; Kobayashi, Daiki ; Tomatsu, Yuki ; Hien, Khuat Thi Thu ; Mizutani, Goro ; Rahman, Mohammad Mizanur ; Rutt, Harvey N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c494t-7b2f0f2f032c52f93a1f9196ceb25d634cdf219d67531710a5b46a0048825fb93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Anisotropy</topic><topic>Excitation</topic><topic>Gold</topic><topic>Harmonic response</topic><topic>Second harmonic generation</topic><topic>Semiconductor lasers</topic><topic>Substrates</topic><topic>Thickness</topic><topic>Thin films</topic><topic>Titanium dioxide</topic><topic>YAG lasers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Haque, Md Ehasanul</creatorcontrib><creatorcontrib>Kobayashi, Daiki</creatorcontrib><creatorcontrib>Tomatsu, Yuki</creatorcontrib><creatorcontrib>Hien, Khuat Thi Thu</creatorcontrib><creatorcontrib>Mizutani, Goro</creatorcontrib><creatorcontrib>Rahman, Mohammad Mizanur</creatorcontrib><creatorcontrib>Rutt, Harvey N.</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><collection>DOAJ Directory of Open Access Journals</collection><jtitle>AIP advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Haque, Md Ehasanul</au><au>Kobayashi, Daiki</au><au>Tomatsu, Yuki</au><au>Hien, Khuat Thi Thu</au><au>Mizutani, Goro</au><au>Rahman, Mohammad Mizanur</au><au>Rutt, Harvey N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optical second harmonic generation analysis of the atomically stepped Au/TiO2 (320) interface</atitle><jtitle>AIP advances</jtitle><date>2017-12</date><risdate>2017</risdate><volume>7</volume><issue>12</issue><spage>125011</spage><epage>125011-10</epage><pages>125011-125011-10</pages><issn>2158-3226</issn><eissn>2158-3226</eissn><coden>AAIDBI</coden><abstract>A gold thin film with the thickness of 2nm on the TiO2(320) substrate has been fabricated in a UHV chamber at the pressure of 2x10-7 Torr. We observed the second harmonic response from the Au/TiO2(320) interface and bare TiO2(320) as a function of the rotation angle around the surface normal by using of a pulsed Nd3+:YAG laser as the excitation light at a photon energy of 1.17 eV and 2.33 eV. An isotropic response was observed from both samples for 1.17 eV photon energy excitation. In contrast, an anisotropic response was observed from both samples for 2.33 eV photon energy excitation. From the Au/TiO2(320) interface, anisotropic structure of SHG response was observed in the
[
2
¯
30
]
direction for Pin/Pout polarization combination. Nonlinear susceptibility elements were decomposed and two groups of them were assigned as the main contribution from the step and terrace of the vicinal TiO2 surface.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5006847</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-4534-9359</orcidid><orcidid>https://orcid.org/0000-0003-4219-8281</orcidid><orcidid>https://orcid.org/0000-0003-4953-5404</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Anisotropy Excitation Gold Harmonic response Second harmonic generation Semiconductor lasers Substrates Thickness Thin films Titanium dioxide YAG lasers |
| title | Optical second harmonic generation analysis of the atomically stepped Au/TiO2 (320) interface |
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