Ultra-low threshold polariton lasing in photonic crystal cavities

2011/08/24 by Stefano Azzini, Dario Gerace, Matteo Galli +9
Engineering · Physics and Astronomy · #Condensed matter physics #Exciton #Lasing threshold #Materials science #Optics #Optoelectronics #Photon #Photonic Crystals and Applications #Photonic crystal #Photonics #Physics #Plasmonic and Surface Plasmon Research #Polariton #Strong Light-Matter Interactions #cond-mat.other #physics.optics

paper · pdf · doi:10.1063/1.3638469

published as Appl. Phys. Lett. 99, 111106 (2011) · 4 pages, 3 figures

arxiv created 2011/08/24 · openalex publication_date 2011/09/12 · arxiv updated 2012/02/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The authors show clear experimental evidence of lasing of exciton polaritons confined in L3 photonic crystal cavities. The samples are based on an InP membrane in air containing five InAsP quantum wells. Polariton lasing is observed with thresholds as low as 120 nW, below the Mott transition, while conventional photon lasing is observed for a pumping power one to three orders of magnitude higher.

Citations

• Quantum theory of exciton-photon coupling in photonic crystal slabs with embedded quantum wells
• Polariton Laser Using Single MicropillarGaAs−GaAlAsSemiconductor Cavities
• GaAs photonic crystal cavity with ultrahigh Q: microwatt nonlinearity at 155 μm
• Bose–Einstein condensation of exciton polaritons
• Controlling the Spontaneous Emission Rate of Single Quantum Dots in a Two-Dimensional Photonic Crystal