A InGaN/GaN quantum dot green (λ=524 nm) laser

Meng Zhang, Animesh Banerjee, Chi-Sen Lee, John M. Hinckley, Pallab Bhattacharya

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

The characteristics of self-organized InGaN/GaN quantum dot lasers are reported. The laser heterostructures were grown on c-plane GaN substrates by plasma-assisted molecular beam epitaxy and the laser facets were formed by focused ion beam etching with gallium. Emission above threshold is characterized by a peak at 524 nm (green) and linewidth of 0.7 nm. The lowest measured threshold current density is 1.2 kA/ cm2 at 278 K. The slope and wall plug efficiencies are 0.74 W/A and ∼1.1%, respectively, at 1.3 kA/ cm 2. The value of T0 =233 K in the temperature range of 260-300 K. © 2011 American Institute of Physics.
Original languageEnglish (US)
Pages (from-to)221104
JournalApplied Physics Letters
Volume98
Issue number22
DOIs
StatePublished - Jun 3 2011
Externally publishedYes

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