Microdisk resonator with a linear defect at some distance away from the circumference is
studied theoretically. We demonstrate that the presence of the defect leads to (i) …

Mid-infrared ring laser Page 1 Mid-infrared ring laser A. Krier, VV Sherstnev, D. Wright, AM
Monakhov and G. Hill The first mid-infrared ring laser diode based on InAs and operating in …

A microcavity laser pumped by a pulsed evanescent optical wave is demonstrated. The laser
radiates intense, linearly polarized light isotropically in a plane perpendicular to the axis of …

A torus knot model is presented to analyze the chiral wave propagation of photonic quantum-
ring lasers in a three-dimensional Rayleigh–Fabry–Perot toroidal cavity. The Rayleigh …

We report on the observation of “hole” whispering gallery lasers from semiconductor
microcavities with three dimensional optical confinement, with thresholds potentially …

We present a wet etching process to fabricate good vertical mesa structures that result in
high quality (Q) factors up to 2× 10 4⁠, important for smooth sidewall cavities such as the …

We describe an optical sensor using photonic quantum ring lasers and resonance-
enhanced photodetectors for the purpose of counting object discrimination. Due to the angle …

We have fabricated three-dimensional (3D) photonic quantum ring lasers with an equilateral
triangle microcavity. Their spectra were well explained by combining the off-normal …

The effect of surface treatment on leakage current is investigated for two structures of the
electropumped GaAs/AlGaAs laser microcavities, one with mesa and the other with …

Mid-infrared ring laser diodes based on InAs grown by LPE are described. The source is
based on a symmetrical double heterostructure with large band offsets that operates in a …