TY - GEN
T1 - Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity
AU - Malard, Leandro M.
AU - Alencar, Thonimar V.
AU - Barboza, Ana Paula M.
AU - Mak, Kin Fai
AU - De Paula, Ana M.
PY - 2013/11/21
Y1 - 2013/11/21
N2 - We report the observation of second harmonic generation (SHG) from odd-layer MoS2 atomic crystal. In contrast, no SHG is observed for samples with even layer numbers due to the restoration of perfect inversion symmetry. Moreover, the SHG intensity is found to directly reflect the underlying 3-fold rotation symmetry of the crystal, which provides a powerful method for optical imaging of the material crystal structure with sub-micron resolution.
AB - We report the observation of second harmonic generation (SHG) from odd-layer MoS2 atomic crystal. In contrast, no SHG is observed for samples with even layer numbers due to the restoration of perfect inversion symmetry. Moreover, the SHG intensity is found to directly reflect the underlying 3-fold rotation symmetry of the crystal, which provides a powerful method for optical imaging of the material crystal structure with sub-micron resolution.
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M3 - Conference contribution
AN - SCOPUS:84887786056
SN - 9781557529725
T3 - CLEO: QELS_Fundamental Science, CLEO:QELS FS 2013
BT - CLEO
T2 - CLEO: QELS_Fundamental Science, CLEO:QELS FS 2013
Y2 - 9 June 2013 through 14 June 2013
ER -