Two-dimensional materials exhibit diverse electronic properties, ranging from insulating
hexagonal boron nitride and semiconducting transition metal dichalcogenides such as …

Hot charge carriers in graphene exhibit fascinating physical phenomena, whose
understanding has improved greatly over the past decade. They have distinctly different …

Recently, black phosphorus (BP) has joined the two-dimensional material family as a
promising candidate for photonic applications due to its moderate bandgap, high carrier …

Graphene with massless Dirac fermions can have exceptionally strong third-order optical
nonlinearities. Yet reported values of nonlinear optical susceptibilities for third-harmonic …

Plasmonics has developed for decades in the field of condensed matter physics and optics.
Based on the classical Maxwell theory, collective excitations exhibit profound light‐matter …

Optical excitation typically enhances electrical conduction and low-frequency radiation
absorption in semiconductors. We, however, observe a pronounced transient decrease of …

We present an experimental demonstration and interpretation of an ultrafast optically
tunable, graphene-based thin film absorption modulator for operation in the THz regime. The …

Van der Waals heterostructures consisting of graphene and transition metal
dichalcogenides have shown great promise for optoelectronic applications. However, an in …

Nonlinear nanophotonics leverages engineered nanostructures to funnel light into small
volumes and intensify nonlinear optical processes with spectral and spatial control. Owing to …

Graphene is conceivably the most nonlinear optoelectronic material we know. Its nonlinear
optical coefficients in the terahertz frequency range surpass those of other materials by …