DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yi, Gao | ko |
dc.contributor.author | Jeon, Sangheon | ko |
dc.contributor.author | Kwon, Young Woo | ko |
dc.contributor.author | Park, Jongkyoon | ko |
dc.contributor.author | Duy Anh Nguyen | ko |
dc.contributor.author | Sandeep, C. S. Suchand | ko |
dc.contributor.author | Hwang, Wan Sik | ko |
dc.contributor.author | Hong, Suck Won | ko |
dc.contributor.author | Kim, Seungchul | ko |
dc.contributor.author | Kim, Young-Jin | ko |
dc.date.accessioned | 2021-12-28T06:40:40Z | - |
dc.date.available | 2021-12-28T06:40:40Z | - |
dc.date.created | 2021-12-26 | - |
dc.date.created | 2021-12-26 | - |
dc.date.issued | 2021-12 | - |
dc.identifier.citation | NANOSCALE, v.14, no.1, pp.175 - 186 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | http://hdl.handle.net/10203/291334 | - |
dc.description.abstract | Third harmonic generation (THG) has proven its value in surface and interface characterization, high-contrast bio-imaging, and sub-wavelength light manipulation. Although THG is observed widely in general solid and liquid substances, when laser pulses are focused at nanometer-level ultra-thin films, the bulk THG has been reported to play the dominant role. However, there are still third harmonics (TH) generated at the surface of the thin-films, not inside the bulk solid - so-called surface TH, whose relative contribution has not been quantitatively revealed to date. In this study, we quantitatively characterized the surface and bulk contributions of THG at ultra-thin beta-Ga2O3 nanomembranes with control of both the laser and thin-nanomembranes parameters, including the laser peak power, polarization state, number of layers, and nanomembranes thicknesses. Their contributions were studied in detail by analyzing the TH from freestanding beta-Ga2O3 nanomembranes compared with TH from beta-Ga2O3 nanomembranes on glass substrates. The contribution of the TH field from the beta-Ga2O3-air interface was found to be 5.12 times more efficient than that from the beta-Ga2O3-glass interface, and also 1.09 times stronger than the TH excited at bulk 1-mu m-thick beta-Ga2O3. Besides, TH from the beta-Ga2O3-air interface was found to be 20% more sensitive to the crystalline structure than that from the beta-Ga2O3-glass interface. This research work deepens our understanding of surface and bulk THG from crystalline materials and provides new possibilities towards designing highly efficient nonlinear optical materials for bio-imaging, energy-harvesting, and ultrafast laser development. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Enhanced third harmonic generation in ultrathin free-standing beta-Ga2O3 nanomembranes: study on surface and bulk contribution | - |
dc.type | Article | - |
dc.identifier.wosid | 000729923000001 | - |
dc.identifier.scopusid | 2-s2.0-85122142584 | - |
dc.type.rims | ART | - |
dc.citation.volume | 14 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 175 | - |
dc.citation.endingpage | 186 | - |
dc.citation.publicationname | NANOSCALE | - |
dc.identifier.doi | 10.1039/d1nr06259j | - |
dc.contributor.localauthor | Kim, Young-Jin | - |
dc.contributor.nonIdAuthor | Yi, Gao | - |
dc.contributor.nonIdAuthor | Jeon, Sangheon | - |
dc.contributor.nonIdAuthor | Kwon, Young Woo | - |
dc.contributor.nonIdAuthor | Park, Jongkyoon | - |
dc.contributor.nonIdAuthor | Duy Anh Nguyen | - |
dc.contributor.nonIdAuthor | Sandeep, C. S. Suchand | - |
dc.contributor.nonIdAuthor | Hwang, Wan Sik | - |
dc.contributor.nonIdAuthor | Hong, Suck Won | - |
dc.contributor.nonIdAuthor | Kim, Seungchul | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | 3RD-HARMONIC GENERATION | - |
dc.subject.keywordPlus | 2ND-HARMONIC GENERATION | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | ADHESION | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | POWER | - |
dc.subject.keywordPlus | AIR | - |
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