Room-temperature polariton lasing in GaN microrods with large Rabi splitting

Author:

Chen Huanqing1,Li Junchao1,Yu Guo1ORCID,Zong Hua1,Lang Rui1,Lei Menglai1,Li Shukun1ORCID,Khan Muhammad Saddique Akbar1,Yang Yue1,Wei Tiantian1,Liao Hui1,Meng Linghai1,Wen Peijun1,Hu Xiaodong1ORCID

Affiliation:

1. Peking University

Abstract

Room-temperature polariton lasing is achieved in GaN microrods grown by metal-organic vapor phase epitaxy. We demonstrate a large Rabi splitting (Ω = 2g0) up to 162 meV, exceeding the results from both the state-of-the-art nitride-based planar microcavities and previously reported GaN microrods. An ultra-low threshold of 1.8 kW/cm2 is observed by power-dependent photoluminescence spectra, with the linewidth down to 1.31 meV and the blue shift up to 17.8 meV. This large Rabi splitting distinguishes our coherent light emission from a conventional photon lasing, which strongly supports the preparation of coherent light sources in integrated optical circuits and the study of exciting phenomena in macroscopic quantum states.

Funder

National Natural Science Foundation of China

Key Technologies Research and Development Program

Science Challenge Project

Beijing Municipal Science and Technology Project

Beijing Nova Program

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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