Journal
OPTICS LETTERS
Volume 44, Issue 9, Pages 2141-2144Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.002141
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Funding
- National Natural Science Foundation of China (NSFC) [11622429]
- National Basic Research Program of China [2014CB921601]
- National Key Research and Development Program of China [2016YFA0300900, 2016YFA0301002]
- Shanghai Education Development Foundation [18SG02]
- National Program for Support of Top-Notch Young Professionals
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We examine the chirality-dependent optical selection rules in two-dimensional monolayer materials with honeycomb lattices, and, based on symmetry argument, we generalize these rules to multi-photon transitions of arbitrary orders. We also present the phase relations between incident and outgoing photons in such processes. The results agree nicely with our experimental observations of second-and third-harmonic generation. In particular, we demonstrate that the phase relation of chiral second-harmonic generation can serve as a handy tool for imaging domains and domain boundaries of these monolayers. Our results can benefit future studies on chirality-related optical phenomena and opto-electronic applications of such materials. (C) 2019 Optical Society of America
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