Second harmonic microscopy of monolayer MoS2. Phys. Rev. B 87, 161403R (2013).Kumar, N.; Najmaei, S.; Cui, Q.; Ceballos, F.; Ajayan, P. M.; Lou, J.; Zhao, H. Second harmonic microscopy of monolayer MoS2. Phys. Rev. B: Condens. Matter Mater. Phys. 2013, 87, 161403....
Second harmonic microscopy of monolayer MoS2. Phys Rev B 2013; 87: 161403. 11 Malard LM, Alencar TV, Barboza APM, Mak KF, Paula AMD. Observation of intense second harmonic generation from MoS2 atomic crystals. Phys Rev B 2013; 87: 201401. 12 Jones AM, Yu HY, Schaibley JR, Yan JQ, ...
Second-harmonic vortex conversion from WS2monolayer. (a–c) Color CCD images of the doughnut-shaped intensity patterns of the σ−fundamental vortex beams with TCs of 1, 2 and 3. (d–f) Corresponding TC images of the fundamental vortex beams. (g–i) Color CCD images of the doughnut-sha...
We have measured optical second-harmonic generation (SHG) from atomically thin samples of MoS2 and h-BN with one to five layers. We observe strong modulation of the SHG intensity with layer number. This modulation is understood as the consequence of broken inversion symmetry in odd layers and ...
Our experiment shows that monolayer molybdenum disulfide (ML MoS2) has big second-order non-linear susceptibility, which allows strong second harmonic generation. As the SHG has relations with the structure of crystal, we can identify the crystal's orientation by detecting the angle dependency of ...
Monolayer transition metal dichalcogenides (TMDs) possess large second-order nonlinear responses due to the broken inversion symmetry, which can extend their intriguing applications in nonlinear nanophotonics and optoelectronics. However, the atomic thickness of monolayer TMDs severely decreases the interaction...
Both of the fundamental and second harmonic wavelengths are located at the photonic band gap edges where the density of electromagnetic modes and the nonlinear interaction time are enhanced. These two mechanisms help us to improve the second harmonic generation efficiencies. Increasing the segments ...
Here, we report for the first time a strong anisotropic enhancement of optical second-harmonic generation (SHG) in monolayer molybdenum disulfide (MoS2) by integrating with one-dimensional (1D) titanium dioxide nanowires (NWs). The SHG signal from the MoS2/NW hybrid structures is over 2 orders ...
second-harmonic generationexcitation wavelengthmetal film thicknessWe numerically investigated the impact of the excitation wavelength and metal film thickness on second-harmonic generation (SHG) in bulk MoS2, which originates from the change in optical-path difference and phase difference among the ...
We investigate Second Harmonic Generation (SHG) in monolayer WS2 both deposited on a SiO2/Si substrate or suspended using transmission electron microscopy grids. We find unusually large second order nonlinear susceptibility, with an estimated value of deff ~ 4.5 nm/V nearly three orders of magnitu...