Single-mode vertical-cavity surface emitting lasers for Rb-based chip-scale atomic clock.

The results of numerical simulation and study of lasing characteristics of semiconductor verticalcavity surface-emitting lasers based on AlGaAs alloys are presented. Lasers exhibit stable single-mode lasing at a wavelength of 795 nm at low operating currents ∼1.5 mA and an output power of 350 μW, which offers prospects of their applications in next-generation chip-scale atomic clocks [ABSTRACT FROM AUTHOR]