All-2D material photonic devices

Area of Science:

• Photonics and Materials Science
• Focuses on the intersection of advanced materials and optical device engineering.

Background:

• Two-dimensional (2D) materials are increasingly vital across scientific disciplines.
• Historically, 2D materials were combined with conventional materials in devices.
• A recent paradigm shift involves fabricating photonic devices solely from 2D materials.

Purpose of the Study:

• To review photonic devices exclusively composed of 2D materials.
• To highlight the potential of ultrathin photonic devices enabled by 2D materials.
• To explore unique optical properties of 2D materials for advanced applications.

Main Methods:

• Review of existing literature on 2D material-based photonic devices.
• Analysis of demonstrated devices including monolithic and heterostructures.
• Discussion of device types such as photonic waveguides, lenses, and optical cavities.

Main Results:

• Successful demonstration of various photonic devices using only 2D materials.
• Identification of exceptionally high refractive indices in 2D materials, enabling ultrathin designs.
• Recognition of unique optical anisotropy and spin orbit coupling properties.

Conclusions:

• Photonic devices made entirely of 2D materials offer unprecedented thinness.
• The unique optical characteristics of 2D materials open new avenues for device applications.
• This field promises exciting prospects for future optical technologies.