We observed strong second harmonic generation (SHG) from odd-layer MoS2 atomic crystal, while no SHG is present for the even layer numbers regions. The SHG intensity measurements provides an optical tool for imaging the crystal structure..
© 2013 OSA
L. M. Malard, T. V. Alencar, A. P. M. Barbosa, K. F. Mak, and A. M. de Paula, "Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity," in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper JW2A.05.
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