Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The Influence of a Single Quantum Dot State on the Characteristics of a Microdisk Laser

Published

Author(s)

Z G. Xie, S Gotzinger, W Fang, H Cao, Glenn S. Solomon

Abstract

We report a quantum dot microcavity laser with a cw sub- W lasing threshold. In the region below threshold, the Q initially degrades with increasing pump power, after which saturation occurs and the Q recovers and exceeds the spectrometer resolution. We associate the initial Q spoiling with the QD state broadening that occurs with increasing pump power. For a 1.8 m diameter microdisk, the Q before lasing typically exceeds 15000. While lasing occurs under a variety of conditions, significant reduction of the lasing threshold is observed when an individual QD state is aligned with the cavity.
Citation
Physical Review Letters

Keywords

lasing, microcavity, quantum electrodynamics, semiconductor, single quantum dot

Citation

Xie, Z. , Gotzinger, S. , Fang, W. , Cao, H. and Solomon, G. (2021), The Influence of a Single Quantum Dot State on the Characteristics of a Microdisk Laser, Physical Review Letters (Accessed July 13, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 12, 2021