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dc.contributor.authorLee, Seung-Heon-
dc.contributor.authorKang, Bong Joo-
dc.contributor.authorYoo, Ba-Wool-
dc.contributor.authorLee, Seung-Chul-
dc.contributor.authorLee, Seung-Jun-
dc.contributor.authorJazbinsek, Mojca-
dc.contributor.authorYun, Hoseop-
dc.contributor.authorRotermund, Fabian-
dc.contributor.authorKwon, O-Pil-
dc.date.accessioned2018-03-21T15:28:44Z-
dc.date.available2018-03-21T15:28:44Z-
dc.date.issued2017-
dc.identifier.issn1616-301Xde_CH
dc.identifier.issn1616-3028de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/4154-
dc.description.abstractFor terahertz (THz) wave generators based on organic electrooptic crystals, their intrinsic phonon modes are playing an essential role in THz generation characteristics. Here, this study proposes an effective design strategy for THz phonon mode engineering of organic electrooptic salt crystals for efficient optical-to-THz frequency conversion. To reduce phonon-mode intensity, strongly electronegative trifuoromethyl group acting as strong hydrogen-bond acceptor is incorporated into molecular anions. New 2-(4-hydroxy-3-methoxystyryl)-1-methylquinolinium 4-(trifuoromethyl)benzenesulfonate (HMQ-4TFS) crystals exhibit a relatively small absorption coefficient in the THz spectral range between 0.5 and 4 THz, which is attributed to suppressed molecular vibrations due to strong hydrogen bonds involving the 4TFS anion. In addition, HMQ-4TFS crystals possess a very large macroscopic optical nonlinearity, comparable (or even higher) to benchmark stilbazolium crystals. Based on the low-intensity THz phonon modes and the large optical nonlinearity, a 0.37 mm thick HMQ-4TFS crystal pumped with 150 fs infrared laser pulses facilitates very efficient THz wave generation by optical rectification, delivering 23 times higher peak-to-peak THz electric eld than the widely used standard inorganic ZnTe crystal (1.0 mm thick) and a broader spectral bandwidth. Therefore, strongly electronegative groups introduced into molecular salt electrooptic crystals provide a very promising design strategy of THz phonon mode engineering for developing intense broadband THz sources.de_CH
dc.language.isoende_CH
dc.publisherWileyde_CH
dc.relation.ispartofAdvanced Functional Materialsde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subject.ddc530: Physikde_CH
dc.subject.ddc540: Chemiede_CH
dc.subject.ddc620: Ingenieurwesende_CH
dc.titleTerahertz phonon mode engineering of highly efficient organic terahertz generatorsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Computational Physics (ICP)de_CH
dc.identifier.doi10.1002/adfm.201605583de_CH
zhaw.funding.euNode_CH
zhaw.issue14de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.start1605583de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume27de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Lee, S.-H., Kang, B. J., Yoo, B.-W., Lee, S.-C., Lee, S.-J., Jazbinsek, M., Yun, H., Rotermund, F., & Kwon, O.-P. (2017). Terahertz phonon mode engineering of highly efficient organic terahertz generators. Advanced Functional Materials, 27(14), 1605583. https://doi.org/10.1002/adfm.201605583
Lee, S.-H. et al. (2017) ‘Terahertz phonon mode engineering of highly efficient organic terahertz generators’, Advanced Functional Materials, 27(14), p. 1605583. Available at: https://doi.org/10.1002/adfm.201605583.
S.-H. Lee et al., “Terahertz phonon mode engineering of highly efficient organic terahertz generators,” Advanced Functional Materials, vol. 27, no. 14, p. 1605583, 2017, doi: 10.1002/adfm.201605583.
LEE, Seung-Heon, Bong Joo KANG, Ba-Wool YOO, Seung-Chul LEE, Seung-Jun LEE, Mojca JAZBINSEK, Hoseop YUN, Fabian ROTERMUND und O-Pil KWON, 2017. Terahertz phonon mode engineering of highly efficient organic terahertz generators. Advanced Functional Materials. 2017. Bd. 27, Nr. 14, S. 1605583. DOI 10.1002/adfm.201605583
Lee, Seung-Heon, Bong Joo Kang, Ba-Wool Yoo, Seung-Chul Lee, Seung-Jun Lee, Mojca Jazbinsek, Hoseop Yun, Fabian Rotermund, and O-Pil Kwon. 2017. “Terahertz Phonon Mode Engineering of Highly Efficient Organic Terahertz Generators.” Advanced Functional Materials 27 (14): 1605583. https://doi.org/10.1002/adfm.201605583.
Lee, Seung-Heon, et al. “Terahertz Phonon Mode Engineering of Highly Efficient Organic Terahertz Generators.” Advanced Functional Materials, vol. 27, no. 14, 2017, p. 1605583, https://doi.org/10.1002/adfm.201605583.


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