A robust surface emitting continuous-wave terahertz quantum cascade laser has been realized in a two-dimensional photonic crystal structure.

Use of a defect chalcopyrite might become practical at pump levels sufficiently lower than the optical damage threshold.

A team from Peking University have reported a way to make a chaotic microcavity transparent for a free-space laser beam.

All-optical inscription of structures in an x-cut LiNbO3 crystal achieved by periodically lowering the nonlinear refractive index using ultrashort pulses.

Vladimir P. Drachev has studied a uniaxial hyperbolic metamaterial for its use in optical communications systems.

Aside from the classical Gaussian intensity profiles, unconventional laser beam shapes open up new perspectives for technologically relevant areas such as deep-hole drilling, photopolymerization, and nanopatterning.

Solid-state organic amplifiers and lasers have evolved into attractive buildings blocks for on-chip integration. They offer low-cost and simple processing combined with high performance.