Room-temperature cw operation of InGaAsP/InP microdisk lasers

摘要

Microcavity semiconductor lasers are interesting for fundamentals of controlled spontaneous emission, thresholdless lasing, quantum physical interactions between photons, excitons and cavity polaritons. They also promise novel engineering applications such as low noise oscillators, filters and optoelectronic switches. Microdisk lasers which support whispering gallery modes are especially useful in that they provide 2D wavelength scale confinement. Novel InGaAsP/InP microdisks supported on glass substrates have recently been fabricated in our laboratories and have been pumped optically, resulting in the first CW room temperature lasing in these devices.