Electrically pumped InGaAs quantum dot ring and cylindrical cavity lasers

Authors
Groom, KM Wilson, LR Mowbray, DJ Skolnick, MS Hill, G Steer, MJ Hopkinson, M
Citation
Km. Groom et al., Electrically pumped InGaAs quantum dot ring and cylindrical cavity lasers, ELECTR LETT, 37(20), 2001, pp. 1220-1222
Citations number
7
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
37
Issue
20
Year of publication
2001
Pages
1220 - 1222
Database
ISI
SICI code
0013-5194(20010927)37:20<1220:EPIQDR>2.0.ZU;2-D
Abstract
Operation of an electrically pumped, cylindrical cavity laser containing a stack of five self-assembled InGaAs quantum dot layers is reported. A thres hold current density of 47 Acm(-2) is obtained at 150 K, with whispering ga llery mode laser emission observed at similar to1.2eV. Fabrication of a rin g cavity via the removal of part of the non-lasing central region of the cy linder results in a 39% reduction in threshold current.