Quantum mechanics

Materials science

Refractive index

Graphene

Modulation (music)

Slow light

Optical modulator

Optical communication

Acoustics

Photonic crystal

Phase noise

Photonics

Laser

Physics

Nonlinear system

Nanotechnology

Optics

Electro-optic modulator

Nonlinear optical

Nonlinear optics

Phase modulation

Optoelectronics

Laser & Photonics Review

Two‐dimensional (2D) Ti 3 C 2 T x (T = F, O, or OH) MXene, a graphene‐like material, is successfully fabricated for an investigation in nonlinear optics. Its nonlinear refractive index ( n 2 ≈ 10 −4 [cm 2 W −1 ]) and third‐order nonlinear susceptibility (≈ 10 −7 [e.s.u.]) are experimentally confirmed by spatial self‐phase modulation (SSPM) techniques. Applying its strong Kerr effect, a novel all‐optical switcher based on 2D MXene is designed to realize the modulation of pump light to probe light. This indicates that MXene could act as an information converter in an optical light‐control‐light system. Meanwhile, probe light is induced by the pump light to excite diffraction rings, and the ring numbers of the probe light can be controlled to increase by the regulation of the other pump light. Through modulation of the pump light, the “ON” and “OFF” modes in the all‐optical switcher/modulator can be achieved. This work highlights the potential of Ti 3 C 2 T x MXene materials applied in all‐optical switcher/modulators, which can be considered an important step toward MXene‐based advanced photonics devices.

MXene‐Based Nonlinear Optical Information Converter for All‐Optical Modulator and Switcher