DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Deokjoong | ko |
dc.contributor.author | Kim, Won Tae | ko |
dc.contributor.author | Han, Jae-Hyun | ko |
dc.contributor.author | Lee, Ji-Ah | ko |
dc.contributor.author | Lee, Seung-Heon | ko |
dc.contributor.author | Kang, Bong Joo | 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 | van Bezouw, Stein | ko |
dc.contributor.author | Campo, Jochen | ko |
dc.contributor.author | Wenseleers, Wim | ko |
dc.contributor.author | Rotermund, Fabian | ko |
dc.contributor.author | Kwon, O-Pil | ko |
dc.date.accessioned | 2020-06-22T07:20:27Z | - |
dc.date.available | 2020-06-22T07:20:27Z | - |
dc.date.created | 2020-06-15 | - |
dc.date.created | 2020-06-15 | - |
dc.date.issued | 2020-05 | - |
dc.identifier.citation | ADVANCED OPTICAL MATERIALS, v.8, no.10, pp.1902099 | - |
dc.identifier.issn | 2195-1071 | - |
dc.identifier.uri | http://hdl.handle.net/10203/274769 | - |
dc.description.abstract | Enhanced terahertz (THz) wave generation is demonstrated in nonlinear organic crystals through refractive index engineering, which improves phase matching characteristics substantially. Unlike conventional low-bandgap nonlinear organic crystals, the newly designed benzimidazolium-based HMI (2-(4-hydroxy-3-methoxystyryl)-1,3-dimethyl-1H-benzoimidazol-3-ium) chromophore possesses a relatively wide bandgap. This reduces the optical group index in the near-infrared, allowing better phase matching with the generated THz waves, and leads to high optical-to-THz conversion. A unique feature of the HMI-based crystals, compared to conventional wide-bandgap aniline-based crystals, is their remarkably larger macroscopic optical nonlinearity, a one order of magnitude higher diagonal component in macroscopic nonlinear susceptibility than NPP ((1-(4-nitrophenyl)pyrrolidin-2-yl)methanol) crystals. The HMI-based crystals also exhibit much higher thermal stability, with a melting temperature T-m above 250 degrees C, versus aniline-based crystals (116 degrees C for NPP). With pumping at the technologically important wavelength of 800 nm, the proposed HMI-based crystals boost high optical-to-THz conversion efficiency, comparable to benchmark low-bandgap quinolinium crystals with state-of-the-art macroscopic nonlinearity. This performance is due to the excellent phase matching enabled by decreasing optical group indices in the near-infrared through wide-bandgap chromophores. The proposed wide-bandgap design is a promising way to control the refractive index of various nonlinear organic materials for enhanced frequency conversion processes. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Wide-Bandgap Organic Crystals: Enhanced Optical-to-Terahertz Nonlinear Frequency Conversion at Near-Infrared Pumping | - |
dc.type | Article | - |
dc.identifier.wosid | 000536081600017 | - |
dc.identifier.scopusid | 2-s2.0-85081718346 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 10 | - |
dc.citation.beginningpage | 1902099 | - |
dc.citation.publicationname | ADVANCED OPTICAL MATERIALS | - |
dc.identifier.doi | 10.1002/adom.201902099 | - |
dc.contributor.localauthor | Rotermund, Fabian | - |
dc.contributor.nonIdAuthor | Kim, Deokjoong | - |
dc.contributor.nonIdAuthor | Han, Jae-Hyun | - |
dc.contributor.nonIdAuthor | Lee, Ji-Ah | - |
dc.contributor.nonIdAuthor | Lee, Seung-Heon | - |
dc.contributor.nonIdAuthor | Kang, Bong Joo | - |
dc.contributor.nonIdAuthor | Jazbinsek, Mojca | - |
dc.contributor.nonIdAuthor | Yoon, Woojin | - |
dc.contributor.nonIdAuthor | Yun, Hoseop | - |
dc.contributor.nonIdAuthor | Kim, Dongwook | - |
dc.contributor.nonIdAuthor | van Bezouw, Stein | - |
dc.contributor.nonIdAuthor | Campo, Jochen | - |
dc.contributor.nonIdAuthor | Wenseleers, Wim | - |
dc.contributor.nonIdAuthor | Kwon, O-Pil | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | electro-optical materials | - |
dc.subject.keywordAuthor | nonlinear optics | - |
dc.subject.keywordAuthor | terahertz photonics | - |
dc.subject.keywordPlus | HYPER-RAYLEIGH SCATTERING | - |
dc.subject.keywordPlus | SINGLE-CRYSTALS | - |
dc.subject.keywordPlus | 2ND-HARMONIC GENERATION | - |
dc.subject.keywordPlus | MOLECULAR-CRYSTALS | - |
dc.subject.keywordPlus | THZ GENERATION | - |
dc.subject.keywordPlus | PULSES | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | RECTIFICATION | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | DYNAMICS | - |
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