Room-temperature polariton lasers based on GaN microcavities

• DOI: 10.1063/1.1494126
• Publication Date: 2002-07-28T22:05:02Z
• Authors: Guillaume Malpuech; Aldo Di Carlo; Alexey Kavokin; Jeremy J. Baumberg; Marian Zamfirescu; Paolo Lugli
• Keywords: 0103 physical sciences; 530; 01 natural sciences; 7. Clean energy

The critical temperature for Bose condensation of exciton polaritons in an AlGaN microcavity containing 9 GaN quantum wells is calculated to be T=460 K. We have modeled the kinetics such a device using two-dimensional Boltzmann equation. Room-temperature lasing found with threshold as small 100 mW. kinetic blocking polariton relaxation that prevents formation Bose-condensed phase at low temperatures disappears high temperatures, especially n-doped samples. Thus, microcavities are excellent candidates realization room-temperature lasers.