2021年11月25日 · In this work we demonstrate strong, tunable SHG based on exciton resonances in nominally inversion-symmetric MoS 2 bilayers with 2H stacking: Varying the laser excitation energy allows us to...

2013年5月29日 · We have measured optical second-harmonic generation (SHG) from atomically thin samples of MoS 2 and h-BN with one to five layers. We observe strong SHG from materials with odd layer thickness, for which a noncentrosymmetric structure is expected, while the centrosymmetric materials with even layer thickness do not yield appreciable SHG.

2016年3月14日 · Few-atom-thick slivers of the 3R phase of molybdenum disulfide (MoS2) are promising for ultrathin second-harmonic generation (SHG). Thinner nonlinear media are desired for use in...

2021年9月9日 · Here we demonstrate a novel approach for the all-optical control of the second-harmonic (SH) polarization in MoS 2 and show that this can be used for all-optical modulation of the SH efficiency...

2014年5月2日 · The broken inversion symmetry of the atomically thin monolayer shows strong second-harmonic generation (SHG), in contrast to the centrosymmetric bulk material, which is immune to the second-order nonlinear processes.

2023年8月18日 · Enhancement of the second harmonic generation (SHG) from monolayer MoS2 is achieved by embedding it in a double resonant distributed Bragg reflector microcavity, with one resonance at second harmonic...

The particle-on-mirror nanocavity, supporting multiple plasmonic resonances, provides an ideal platform to efficiently boost the nonlinear optical processes at the nanoscale. Here, we report on the enhancement of the second (SHG) and third-harmonic generations (THG) from the monolayer MoS 2 using a multi-resonant Au nanosphere dimer-on-mirror nanocavity (DoMN). The strong plasmon hybridization ...

2024年7月3日 · The SHG studies demonstrate a giant SHG in BM-MoS 2 that is 126 times higher than monolayer MoS 2 and 21 times higher than gallium arsenide (GaAs), a material with the highest second-order NLO susceptibility

2022年6月17日 · Herein, we show that stacking orders of a MoS 2 homobilayer results in strong tunability of interlayer coupling and second harmonic generation (SHG). The interlayer coupling exhibits a strong dependence on the alignment and staggering degree of the sulfur atoms in the two MoS 2 layers.

2024年7月3日 · The SHG studies demonstrate a giant SHG in BM-MoS 2 that is 126 times higher than monolayer MoS 2 and 21 times higher than gallium arsenide (GaAs), a material with the highest second-order NLO susceptibility among known bulk semiconductors.