DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shin, Myeong-Hoon | ko |
dc.contributor.author | Kim, Won Tae | ko |
dc.contributor.author | Kim, Se-In | ko |
dc.contributor.author | Lee, Seung-Heon | ko |
dc.contributor.author | Yu, In Cheol | ko |
dc.contributor.author | Jazbinsek, Mojca | ko |
dc.contributor.author | Yoon, Woojin | ko |
dc.contributor.author | Yun, Hoseop | ko |
dc.contributor.author | Kim, Dongwook | ko |
dc.contributor.author | Rotermund, Fabian | ko |
dc.contributor.author | Kwon, O-Pil | ko |
dc.date.accessioned | 2019-12-13T07:23:20Z | - |
dc.date.available | 2019-12-13T07:23:20Z | - |
dc.date.created | 2019-11-25 | - |
dc.date.issued | 2019-11 | - |
dc.identifier.citation | ADVANCED OPTICAL MATERIALS, v.7, no.21, pp.1900953 | - |
dc.identifier.issn | 2195-1071 | - |
dc.identifier.uri | http://hdl.handle.net/10203/268882 | - |
dc.description.abstract | New organic electro-optic crystals containing orthogonally oriented electron-withdrawing groups are developed for efficient and gap-free THz wave generation with a very flat broadband spectral shape. These crystals consist of 2-(4-hydroxystyryl)-1-methylquinolinium (OHQ) cationic chromophores and nonplanar 4-(trifluoromethoxy)benzenesulfonate (TFO) anions with orthogonally oriented highly electronegative trifluoromethoxy groups capable of strong hydrogen bonds. OHQ-TFO crystals exhibit enhanced macroscopic optical nonlinearity with a second harmonic generation efficiency 2.3 times greater than that of benchmark OHQ-based crystals with conventional planar anions. This enhancement is attributed to reduced edge-to-face π–π interactions between cations and anions due to the orthogonal orientation and electron-withdrawing characteristics of trifluoromethoxy groups. Moreover, OHQ-TFO crystals exhibit excellent THz wave characteristics generated by optical rectification; 0.52 mm thick OHQ-TFO crystal generate a peak-to-peak THz electric field 15 times higher than that of inorganic standard 1.0 mm thick ZnTe crystal and a broader spectrum with an upper cut-off frequency near 8 THz at pump wavelengths of 1140–1500 nm. Unlike previously reported state-of-the-art organic electro-optic salt crystals with strong phonon absorption in the frequency range of 0.8–3 THz, OHQ-TFO crystals facilitate gap-free broadband THz wave generation without strong absorption modulations due to the strong hydrogen bond ability of trifluoromethoxy groups. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Efficient Gap-Free Broadband Terahertz Generators Based on New Organic Quinolinium Single Crystals | - |
dc.type | Article | - |
dc.identifier.wosid | 000496501800020 | - |
dc.identifier.scopusid | 2-s2.0-85070518820 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 21 | - |
dc.citation.beginningpage | 1900953 | - |
dc.citation.publicationname | ADVANCED OPTICAL MATERIALS | - |
dc.identifier.doi | 10.1002/adom.201900953 | - |
dc.contributor.localauthor | Rotermund, Fabian | - |
dc.contributor.nonIdAuthor | Shin, Myeong-Hoon | - |
dc.contributor.nonIdAuthor | Kim, Se-In | - |
dc.contributor.nonIdAuthor | Lee, Seung-Heon | - |
dc.contributor.nonIdAuthor | Jazbinsek, Mojca | - |
dc.contributor.nonIdAuthor | Yoon, Woojin | - |
dc.contributor.nonIdAuthor | Yun, Hoseop | - |
dc.contributor.nonIdAuthor | Kim, Dongwook | - |
dc.contributor.nonIdAuthor | Kwon, O-Pil | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | electro-optics | - |
dc.subject.keywordAuthor | nonlinear optics | - |
dc.subject.keywordAuthor | organic crystals | - |
dc.subject.keywordAuthor | terahertz waves | - |
dc.subject.keywordPlus | HYDROGEN-BOND | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | ELECTRON-DIFFRACTION | - |
dc.subject.keywordPlus | FLUORINE | - |
dc.subject.keywordPlus | ETHERS | - |
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