Towards compact phase-matched and waveguided nonlinear optics in atomically layered semiconductors

Xu, Xinyi; Trovatello, Chiara; Mooshammer, Fabian; Shao, Yinming; Zhang, Shuai; Yao, Kaiyuan; Basov, D. N.; Cerullo, Giulio; Schuck, P. James

doi:10.1038/s41566-022-01053-4

Cited by 44 publications

(89 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dilemma between restoration of inversion symmetry and sufficiently long light-matter interaction drastically dilutes the applicability of 2H-stacked TMDCs. The inversion asymmetry can be well maintained with layer increasing in few-layer TMDCs stacked in 3 R configuration, which contributes to giant SHG activity for on-chip nonlinear optical devices 22 – 24 . However, we noted that previously-reported 2D NLO semiconductors usually demonstrate barely satisfactory photoelectric response and relatively low SHG susceptibility in standardized telecom bands (<1 × 10 −10 m·V −1 ), far from satisfying the requirements of chip-level electronic-photonic co-design for on-chip telecommunication 5 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional semiconducting SnP2Se6 with giant second-harmonic-generation for monolithic on-chip electronic-photonic integration

et al. 2023

View full text Add to dashboard Cite

Two-dimensional (2D) layered semiconductors with nonlinear optical (NLO) properties hold great promise to address the growing demand of multifunction integration in electronic-photonic integrated circuits (EPICs). However, electronic-photonic co-design with 2D NLO semiconductors for on-chip telecommunication is limited by their essential shortcomings in terms of unsatisfactory optoelectronic properties, odd-even layer-dependent NLO activity and low NLO susceptibility in telecom band. Here we report the synthesis of 2D SnP2Se6, a van der Waals NLO semiconductor exhibiting strong odd-even layer-independent second harmonic generation (SHG) activity at 1550 nm and pronounced photosensitivity under visible light. The combination of 2D SnP2Se6 with a SiN photonic platform enables the chip-level multifunction integration for EPICs. The hybrid device not only features efficient on-chip SHG process for optical modulation, but also allows the telecom-band photodetection relying on the upconversion of wavelength from 1560 to 780 nm. Our finding offers alternative opportunities for the collaborative design of EPICs.

show abstract

Section: Introductionmentioning

confidence: 99%

Two-dimensional semiconducting SnP2Se6 with giant second-harmonic-generation for monolithic on-chip electronic-photonic integration

et al. 2023

View full text Add to dashboard Cite

show abstract

“…As the NLO response depends on the anisotropy structure and crystallinity of the perovskite crystals, 51 we further carried out XRD, GIWAXS, TEM, and SAED measurements to clarify the crystallinity and crystallographic orientation of ( R / S -MBA) 4 Bi 2 Cl 10 microwire arrays. The XRD patterns of the microwire arrays are presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

Strong anisotropic second-order nonlinear optical responses in 0D lead-free chiral perovskite single-crystalline microwire arrays

Dong

wang

Yang

et al. 2023

Inorg. Chem. Front.

View full text Add to dashboard Cite

show abstract

“…Further optimization includes using planar plasmonic nanogaps that facilitate the overlap of 2H-stacked TMD χ WSed 2 (2) with the maximum local field, 40,41 incorporating 3Rstacked TMDs that exhibit extraordinary nonlinear properties for nanophotonics. 6 For the current design, one can take advantage of the intermediate coupling regime that increases the energy harbored in the WSe 2 65 (nonlinear material) and thus lifts the mode overlap. Also, breaking the inversion symmetry is another practical route to boost the nonlinear response.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Nonlinear frequency conversion, the consequence of the superlinear interaction between intense light and matter, plays an indispensable role in modern photonic devices. − For second harmonic generation (SHG), a typical fundamental nonlinear process, phase matching is one of the most fascinating methods to boost nonlinear efficiency at a relatively large scale. − But in the trend of integrated quantum photonic circuits, shrinking the size of nonlinear optical devices down to micrometers or even nanometers is highly in demand. When the size of the structure is far smaller than the coherent length, phase matching is generally invalid and the nonlinear conversion efficiency is solely dependent on the local electromagnetic field strength, mode overlap, and nonlinear susceptibility.…”

Section: Introductionmentioning

confidence: 99%

Coherent Second Harmonic Generation Enhanced by Coherent Plasmon–Exciton Coupling in Plasmonic Nanocavities

et al. 2023

View full text Add to dashboard Cite

Efficient nonlinear optical process at the nanoscale is in high demand for the trend of integrating photonic devices. However, limited by the short interaction length, the nonlinear conversion efficiency in nanostructures is generally weak. Inheriting the strong confinement of light and the large nonlinear response of the matter, plasmon−exciton polaritons (plexcitons) provide a promising platform for nonlinear nanophotonics. Here, we engineered the effective second-order susceptibility of a hybrid nanostructure by coherent plasmon−exciton coupling. More than 3000-fold enhancement in the second harmonic generation (SHG) is achieved at the plexciton states in a plasmonic nanocavity embedded with multilayer WSe 2 compared with that in the bare exciton material on film. The polarimetric and layer-dependent measurements reveal that the SHG originates from both plasmon and exciton components and their nonlinear interaction. Our work provides an additional degree of freedom for enhancing the nonlinear conversion efficiency and gives an insight into the nonlinear plasmon−exciton interaction and their coherent control.

show abstract

Towards compact phase-matched and waveguided nonlinear optics in atomically layered semiconductors

Cited by 44 publications

References 48 publications

Two-dimensional semiconducting SnP2Se6 with giant second-harmonic-generation for monolithic on-chip electronic-photonic integration

Two-dimensional semiconducting SnP2Se6 with giant second-harmonic-generation for monolithic on-chip electronic-photonic integration

Strong anisotropic second-order nonlinear optical responses in 0D lead-free chiral perovskite single-crystalline microwire arrays

Coherent Second Harmonic Generation Enhanced by Coherent Plasmon–Exciton Coupling in Plasmonic Nanocavities

Contact Info

Product

Resources

About