  We report on the first observation of hole whispering gallery lasers from
semiconductor microcavities with three dimensional optical confinement, with
thresholds potentially reducible to micro-to-nano ampere regimes according to a
quadratic size-dependent reduction, due to ideal quantum wire properties of the
naturally formed photonic quantum rings before imminent recombination in a
dynamic steady state fashion. If the device size grows over a critical
diameter, the quantum ring whispering gallery then begins to disappear.
However, cooperative small hole arrays like 256x256 quantum ring emitters avoid
the criticality and open a possibility of constructing practical dense
electro-pumped micro-to-nano watt emitter arrays, amenable to mega-to-giga ring
emitter chip development via present fabrication techniques.
