Benzothiazolium single crystals : a new class of nonlinear optical crystals with efficient THz wave generation

Lee, Seung-Heon; Lu, Jian; Lee, Seung-Jun; Han, Jae-Hyun; Jeong, Chan-Uk; Lee, Seung-Chul; Li, Xian; Jazbinsek, Mojca; Yoon, Woojin; Yun, Hoseop; Kang, Bong Joo; Rotermund, Fabian; Nelson, Keith A.; Kwon, O-Pil

doi:10.1002/adma.201701748

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Benzothiazolium single crystals : a new class of nonlinear optical crystals with efficient THz wave generation
Authors:	Lee, Seung-Heon Lu, Jian Lee, Seung-Jun Han, Jae-Hyun Jeong, Chan-Uk Lee, Seung-Chul Li, Xian Jazbinsek, Mojca Yoon, Woojin Yun, Hoseop Kang, Bong Joo Rotermund, Fabian Nelson, Keith A. Kwon, O-Pil
DOI:	10.1002/adma.201701748
Published in:	Advanced Materials
Volume(Issue):	29
Issue:	30
Page(s):	1701748
Issue Date:	2017
Publisher / Ed. Institution:	Wiley
ISSN:	0935-9648 1521-4095
Language:	English
Subjects:	Nonlinear optics; Organic crystal; Terahertz wave
Subject (DDC):	530: Physics 540: Chemistry
Abstract:	Highly efficient nonlinear optical organic crystals are very attractive for various photonic applications including terahertz (THz) wave generation. Up to now, only two classes of ionic crystals based on either pyridinium or quinolinium with extremely large macroscopic optical nonlinearity have been developed. This study reports on a new class of organic nonlinear optical crystals introducing electron-accepting benzothiazolium, which exhibit higher electron-withdrawing strength than pyridinium and quinolinium in benchmark crystals. The benzothiazolium crystals consisting of new acentric core HMB (2-(4-hydroxy-3-methoxystyryl)-3-methylbenzo[d]thiazol-3-ium) exhibit extremely large macroscopic optical nonlinearity with optimal molecular ordering for maximizing the diagonal second-order nonlinearity. HMB-based single crystals prepared by simple cleaving method satisfy all required crystal characteristics for intense THz wave generation such as large crystal size with parallel surfaces, moderate thickness and high optical quality with large optical transparency range (580-1620 nm). Optical rectification of 35 fs pulses at the technologically very important wavelength of 800 nm in 0.26 mm thick HMB crystal leads to one order of magnitude higher THz wave generation efficiency with remarkably broader bandwidth compared to standard inorganic 0.5 mm thick ZnTe crystal. Therefore, newly developed HMB crystals introducing benzothiazolium with extremely large macroscopic optical nonlinearity are very promising materials for intense broadband THz wave generation and other nonlinear optical applications.
URI:	https://digitalcollection.zhaw.ch/handle/11475/4159
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Lee, S.-H., Lu, J., Lee, S.-J., Han, J.-H., Jeong, C.-U., Lee, S.-C., Li, X., Jazbinsek, M., Yoon, W., Yun, H., Kang, B. J., Rotermund, F., Nelson, K. A., & Kwon, O.-P. (2017). Benzothiazolium single crystals : a new class of nonlinear optical crystals with efficient THz wave generation. Advanced Materials, 29(30), 1701748. https://doi.org/10.1002/adma.201701748

Lee, S.-H. et al. (2017) ‘Benzothiazolium single crystals : a new class of nonlinear optical crystals with efficient THz wave generation’, Advanced Materials, 29(30), p. 1701748. Available at: https://doi.org/10.1002/adma.201701748.

S.-H. Lee et al., “Benzothiazolium single crystals : a new class of nonlinear optical crystals with efficient THz wave generation,” Advanced Materials, vol. 29, no. 30, p. 1701748, 2017, doi: 10.1002/adma.201701748.

LEE, Seung-Heon, Jian LU, Seung-Jun LEE, Jae-Hyun HAN, Chan-Uk JEONG, Seung-Chul LEE, Xian LI, Mojca JAZBINSEK, Woojin YOON, Hoseop YUN, Bong Joo KANG, Fabian ROTERMUND, Keith A. NELSON und O-Pil KWON, 2017. Benzothiazolium single crystals : a new class of nonlinear optical crystals with efficient THz wave generation. Advanced Materials. 2017. Bd. 29, Nr. 30, S. 1701748. DOI 10.1002/adma.201701748

Lee, Seung-Heon, Jian Lu, Seung-Jun Lee, Jae-Hyun Han, Chan-Uk Jeong, Seung-Chul Lee, Xian Li, et al. 2017. “Benzothiazolium Single Crystals : A New Class of Nonlinear Optical Crystals with Efficient THz Wave Generation.” Advanced Materials 29 (30): 1701748. https://doi.org/10.1002/adma.201701748.

Lee, Seung-Heon, et al. “Benzothiazolium Single Crystals : A New Class of Nonlinear Optical Crystals with Efficient THz Wave Generation.” Advanced Materials, vol. 29, no. 30, 2017, p. 1701748, https://doi.org/10.1002/adma.201701748.