Giant two‐photon absorption in monolayer MoS2

@article{Li2015GiantTA,
title={Giant two‐photon absorption in monolayer MoS2},
author={Yuanxin Li and Ningning Dong and Saifeng Zhang and Xiaoyan Zhang and Yanyan Feng and Kangpeng Wang and Long Zhang and Jun Wang},
journal={Laser \& Photonics Reviews},
year={2015},
volume={9}
}
• Published 8 March 2015
• Physics
• Laser & Photonics Reviews
Strong two‐photon absorption (TPA) in monolayer MoS2 is demonstrated in contrast to saturable absorption (SA) in multilayer MoS2 under the excitation of femtosecond laser pulses in the near‐infrared region. MoS2 in the forms of monolayer single crystal and multilayer triangular islands are grown on either quartz or SiO2/Si by employing the seeding method through chemical vapor deposition. The nonlinear transmission measurements reveal that monolayer MoS2 possesses a nonsaturation TPA…
124 Citations

Nonlinear optical characteristics of monolayer MoSe2

• Physics
• 2016
In this study, we utilized picosecond pulses from an Nd:YAG laser to investigate the nonlinear optical characteristics of monolayer MoSe2. Two‐step growth involving the selenization of

Direct Observation of Degenerate Two-Photon Absorption and Its Saturation in WS2 and MoS2 Monolayer and Few-Layer Films.

• Physics
ACS nano
• 2015
The giant nonlinearity of WS2 and MoS2 films is attributed to a two-dimensional confinement, a giant exciton effect, and the band edge resonance of TPA.

Giant Three‐Photon Absorption in Monolayer MoS2 and Its Application in Near‐Infrared Photodetection

• Physics
• 2017
For decades, there has been extensive research on exploring fundamental physical mechanisms for strong and fast optical nonlinearities. One of the important nonlinear‐optical mechanisms is

Two‐Photon Absorption in Monolayer MXenes

• Physics, Chemistry
• 2020
Two‐photon absorption (2PA) is a nonlinear optical (NLO) effect that typically occurs in a conventional semiconductor whose bandgap is larger than the energy of one excited photon but smaller than

Layer-modulated two-photon absorption in MoS2: probing the shift of the excitonic dark state and band-edge

• Physics
Photonics Research
• 2019
Questions hovering over the modulation of bandgap size and excitonic effect on nonlinear absorption in two-dimensional transition metal dichalcogenides (TMDCs) have restricted their application in

Ultra-broadband nonlinear saturable absorption of high-yield MoS2 nanosheets

• Physics
Nanotechnology
• 2016
High-yield MoS2 nanosheets with strong nonlinear optical responses in a broad near-infrared range were synthesized by a facile hydrothermal method and the observation of saturable absorption can be attributed to the enhancement of the hybridization between the Mo d-orbitals and S p-orbital by the oxygen incorporation intoMoS2.

Optical nonlinear absorption of a few-layer MoS2 under green femtosecond excitation

• Physics
Applied Physics B
• 2019
The nonlinear optical absorption of aqueous suspension with a few-layer (4–5 layers) molybdenum disulfide (MoS2) was investigated by Z- and P-scan methods using second harmonic generation from

Large-scale monolayer molybdenum disulfide (MoS2) for mid-infrared photonics

• Physics
Nanophotonics
• 2020
Abstract Mid-infrared (MIR) photonics has attracted tremendous interest because of its broad applications at atmospheric windows. In this work, we report high-performance MIR photonics based on

Layer-Dependent Nonlinear Optical Properties of WS2, MoS2, and Bi2S3 Films Synthesized by Chemical Vapor Deposition.

• Physics
ACS applied materials & interfaces
• 2021
Two-dimensional (2D) layered materials have shown layer-dependent optical properties in both linear optical and nonlinear optical (NLO) regimes due to prominent interlayer coupling and quantum

References

SHOWING 1-10 OF 49 REFERENCES

Ultrafast saturable absorption of two-dimensional MoS2 nanosheets.

• Chemistry
ACS nano
• 2013
Employing high-yield production of layered materials by liquid-phase exfoliation, molybdenum disulfide (MoS2) dispersions with large populations of single and few layers were prepared and exhibited significant saturable absorption (SA) for the femtosecond pulses.

Intense femtosecond photoexcitation of bulk and monolayer MoS2

• Physics, Chemistry
• 2014
The effect of femtosecond laser irradiation on bulk and single-layer MoS2 on silicon oxide is studied. Optical, Field Emission Scanning Electron Microscopy (FESEM) and Raman microscopies were used to

Giant two-photon absorption in bilayer graphene.

• Physics
Nano letters
• 2011
The theory shows that 2PA is significantly greater in bilayer graphene than monolayer graphene in the visible and infrared spectrum (up to 3 μm) with a resonant 2PA coefficient of up to ∼0.2 cm/W.

Facile fabrication of wafer-scale MoS2 neat films with enhanced third-order nonlinear optical performance.

• Physics
Nanoscale
• 2015
The observation of ultrafast NLO performance of the MoS2 filtered films indicates that vacuum filtration is a feasible method for the fabrication of optical thin films, which can be expanded to fabricate other two-dimensional films from the corresponding dispersions.

From Bulk to Monolayer MoS2: Evolution of Raman Scattering

• Chemistry, Physics
• 2012
Molybdenum disulfide (MoS2) is systematically studied using Raman spectroscopy with ultraviolet and visible laser lines. It is shown that only the Raman frequencies of $E_{2{\rm g}}^1$ and \$

Extremely nondegenerate two-photon absorption in direct-gap semiconductors [Invited].

• Physics
Optics express
• 2011
By using two widely different wavelengths the authors are able to access the large 2PA observed previously only in narrow gap semiconductors, and calculate the corresponding enhancement of nonlinear refraction, consisting of two-photon, AC-Stark and Raman contributions.

Carrier and polarization dynamics in monolayer MoS2.

• Physics
Physical review letters
• 2014
In monolayer MoS2, optical transitions across the direct band gap are governed by chiral selection rules, allowing optical valley initialization, and an emission polarization of 40% is recovered at 300 K, close to the maximum emission polarization for this sample at 4 K.

Femtosecond pulse erbium-doped fiber laser by a few-layer MoS(2) saturable absorber.

• Physics
Optics letters
• 2014
The generation of a femtosecond pulse in a fiber ring laser by using a polyvinyl alcohol (PVA)-based molybdenum disulfide (MoS(2) SA) saturable absorber indicates that the filmy PVA-based MoS( 2) SA is indeed a good candidate for an ultrafast saturable absorption device.

Third-harmonic generation in ultrathin films of MoS2.

• Physics
ACS applied materials & interfaces
• 2014
The demonstrated third-harmonic generation can be used for nonlinear optical identification of MoS2 atomic layers with high contrast, better distinguishing power of multilayers, and less restrictions to substrate selections.

Role of the seeding promoter in MoS2 growth by chemical vapor deposition.

• Physics
Nano letters
• 2014
The thinnest semiconductor, molybdenum disulfide (MoS2) monolayer, exhibits promising prospects in the applications of optoelectronics and valleytronics and is found that an optimized concentration of seed molecules is helpful for the nucleation of the MoS2.