Second harmonic generation in defective hexagonal boron nitride.

Cunha, R; Cadore, A; Ramos, SLLM; Watanabe, K; Taniguchi, T; Kim, S; Solntsev, AS; Aharonovich, I; Malard, LM

Second harmonic generation in defective hexagonal boron nitride.

Cunha, R Cadore, A Ramos, SLLM Watanabe, K Taniguchi, T Kim, S Solntsev, AS

Aharonovich, I

Malard, LM

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Publication Type:: Journal Article
Citation:: J Phys Condens Matter, 2020, 32 (19), pp. 19LT01 - ?
Issue Date:: 2020-01-16

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Field	Value	Language
dc.contributor.author	Cunha, R	en_US
dc.contributor.author	Cadore, A	en_US
dc.contributor.author	Ramos, SLLM	en_US
dc.contributor.author	Watanabe, K	en_US
dc.contributor.author	Taniguchi, T	en_US
dc.contributor.author	Kim, S	en_US
dc.contributor.author	Solntsev, AS https://orcid.org/0000-0003-4981-9730	en_US
dc.contributor.author	Aharonovich, I https://orcid.org/0000-0003-4304-3935	en_US
dc.contributor.author	Malard, LM	en_US
dc.date.available	2021-03-22T18:02:02Z
dc.date.issued	2020-01-16	en_US
dc.identifier.citation	J Phys Condens Matter, 2020, 32 (19), pp. 19LT01 - ?	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138847
dc.description.abstract	Determining the role of defects in materials can be an important task both for the fundamental understanding of their influence on material properties and for future applications. In this work, we studied the influence of defects on the second harmonic generation (SHG) in hexagonal boron nitride (h-BN). We characterized the sample by photoluminescence imaging and spectroscopy, showing strong and sharp photoluminescence emission at visible range from h-BN flakes due to single defect states. By doing second harmonic imaging, we found strong emission from the h-BN flakes that correlates spatially with the photoluminescence imaging. By doing polarization-resolved SHG, we found deviations from the expected polarization pattern in pristine h-BN samples. We also characterized the nonlinear optical susceptibility of h-BN with defects with a value of one order of magnitude larger than for pristine h-BN, which highlights the role of defects in the efficiency of SHG. Therefore defect engineering could be used as a potential tool for nonlinear optical signal enhancement.	en_US
dc.language	eng	en_US
dc.relation.ispartof	J Phys Condens Matter	en_US
dc.relation.isbasedon	10.1088/1361-648X/ab6cbf	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Fluids & Plasmas	en_US
dc.title	Second harmonic generation in defective hexagonal boron nitride.	en_US
dc.type	Journal Article
utslib.citation.volume	19	en_US
utslib.citation.volume	32	en_US
utslib.location.activity	England	en_US
utslib.for	0204 Condensed Matter Physics	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	1007 Nanotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	open_access	*
pubs.issue	19	en_US
pubs.publication-status	Published online	en_US
pubs.volume	32	en_US

Abstract:

Determining the role of defects in materials can be an important task both for the fundamental understanding of their influence on material properties and for future applications. In this work, we studied the influence of defects on the second harmonic generation (SHG) in hexagonal boron nitride (h-BN). We characterized the sample by photoluminescence imaging and spectroscopy, showing strong and sharp photoluminescence emission at visible range from h-BN flakes due to single defect states. By doing second harmonic imaging, we found strong emission from the h-BN flakes that correlates spatially with the photoluminescence imaging. By doing polarization-resolved SHG, we found deviations from the expected polarization pattern in pristine h-BN samples. We also characterized the nonlinear optical susceptibility of h-BN with defects with a value of one order of magnitude larger than for pristine h-BN, which highlights the role of defects in the efficiency of SHG. Therefore defect engineering could be used as a potential tool for nonlinear optical signal enhancement.

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http://hdl.handle.net/10453/138847