Optical Harmonic Generation in 2D Materials

TLDR

2D materials exhibit unique optoelectronic properties, giant nonlinear susceptibility, and perfect phase matching, enabling powerful nonlinear light–matter interactions such as second harmonic generation for applications in lasers, waveguides, modulators, and switches. The review aims to discuss optical harmonic generation processes, characterization modes, and tuning techniques in 2D materials. It examines OHG processes, characterization methods, and tuning techniques applied to 2D materials. The review outlines future prospects for optical harmonic generation in 2D materials.

Abstract

Abstract 2D materials are emerging as ideal candidates for fundamental investigations and new technologies due to their unique optoelectronic properties. Giant nonlinear susceptibility and perfect phase matching in 2D materials lead to extraordinary nonlinear light matter interactions, thus enabling several potential applications and fundamental scientific discoveries in nonlinear optics. For instance, second harmonic generation in 2D materials play an important role in optical devices such as, lasers, tunable waveguides, electro‐optic modulators, and switches. This review will discuss optical harmonic generation (OHG) processes, various characterization modes, and tuning techniques in 2D materials. The future prospectives for OHG in 2D materials is discussed. The extremely promising attributes of combining nonlinear optics and 2D materials is becoming a highly important multidisciplinary field.