| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Keine Angabe |
| Titel: | Fluorinated organic electro-optic quinolinium crystals for THz wave generation |
| Autor/-in: | Kim, Se-In Kang, Bong Joo Jeong, Chan-Uk Shin, Myeong-Hoon Kim, Won Tae Jazbinsek, Mojca Yoon, Woojin Yun, Hoseop Kim, Dongwook Rotermund, Fabian Kwon, O-Pil |
| DOI: | 10.1002/adom.201801495 |
| Erschienen in: | Advanced Optical Materials |
| Erscheinungsdatum: | 2019 |
| Verlag / Hrsg. Institution: | Wiley |
| ISSN: | 2195-1071 |
| Sprache: | Englisch |
| Fachgebiet (DDC): | 530: Physik 540: Chemie |
| Zusammenfassung: | Fluorinated electro‐optic crystals with state‐of‐the‐art second‐order nonlinear optical response and excellent characteristics for terahertz (THz) wave generation are reported. The fluorinated organic ionic crystals consist of optically highly nonlinear fluorinated HM6FQ (6‐fluoro‐2‐(4‐hydroxy‐3‐methoxystyryl)‐1‐methylquinolinium) or HM7FQ (7‐fluoro‐2‐(4‐hydroxy‐3‐methoxystyryl)‐1‐methylquinolinium) cations and 4‐methylbenzenesulfonate (T) counter anions. Compared to benchmark electro‐optic crystals based on nonfluorinated HMQ (2‐(4‐hydroxy‐3‐methoxystyryl)‐1‐methylquinolinium) cations, introducing fluorine substituent on HM6FQ cations creates additional hydrogen bonds (Ar-F···H-C). Such a molecular engineering leads to an enhanced thermal stability and significant modulations of phonon vibrational modes of crystals in THz frequency region, while excellent π–π stacking and space filling characteristics of HM6FQ cations in crystals lead to state‐of‐the‐art diagonal component of the macroscopic nonlinear optical susceptibility, similar to the case of HMQ cations. HM6FQ‐based crystals exhibit a very high optical‐to‐THz conversion efficiency, comparable to benchmark HMQ‐based crystals. In addition, due to additional hydrogen bonds induced by fluorine substituents, the spectral shape of the generated THz wave is remarkably modified; e.g., the largest spectral gap is near 1.5 and 2.0 THz for HM6FQ‐ and HMQ‐based crystals, respectively. The fluorinated cationic engineering on nonlinear optical crystals having benchmark nonlinear optical response is, as far as is known, reported for the first time. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/15495 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | School of Engineering |
| Organisationseinheit: | Institute of Computational Physics (ICP) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
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Kim, S.-I., Kang, B. J., Jeong, C.-U., Shin, M.-H., Kim, W. T., Jazbinsek, M., Yoon, W., Yun, H., Kim, D., Rotermund, F., & Kwon, O.-P. (2019). Fluorinated organic electro-optic quinolinium crystals for THz wave generation. Advanced Optical Materials. https://doi.org/10.1002/adom.201801495
Kim, S.-I. et al. (2019) ‘Fluorinated organic electro-optic quinolinium crystals for THz wave generation’, Advanced Optical Materials [Preprint]. Available at: https://doi.org/10.1002/adom.201801495.
S.-I. Kim et al., “Fluorinated organic electro-optic quinolinium crystals for THz wave generation,” Advanced Optical Materials, 2019, doi: 10.1002/adom.201801495.
KIM, Se-In, Bong Joo KANG, Chan-Uk JEONG, Myeong-Hoon SHIN, Won Tae KIM, Mojca JAZBINSEK, Woojin YOON, Hoseop YUN, Dongwook KIM, Fabian ROTERMUND und O-Pil KWON, 2019. Fluorinated organic electro-optic quinolinium crystals for THz wave generation. Advanced Optical Materials. 2019. DOI 10.1002/adom.201801495
Kim, Se-In, Bong Joo Kang, Chan-Uk Jeong, Myeong-Hoon Shin, Won Tae Kim, Mojca Jazbinsek, Woojin Yoon, et al. 2019. “Fluorinated Organic Electro-Optic Quinolinium Crystals for THz Wave Generation.” Advanced Optical Materials. https://doi.org/10.1002/adom.201801495.
Kim, Se-In, et al. “Fluorinated Organic Electro-Optic Quinolinium Crystals for THz Wave Generation.” Advanced Optical Materials, 2019, https://doi.org/10.1002/adom.201801495.
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