Visible two-dimensional photonic crystal slab laser

The authors describe the fabrication and performance of photonic crystal lasers fabricated within thin membranes of InGaP∕InGaAlP quantum well material and emitting in the visible wavelength range. These lasers have ultrasmall mode volumes, emit red light, and exhibit low threshold powers. They can be lithographically tuned from 650to690nm. Their cavity volumes of approximately 0.01μm3 are ideally suited for use as spectroscopic sources.