Prevention of gain saturation by multi-layer quantum dot lasers
Journal
Electronics Letters
Journal Volume
32
Journal Issue
14
Pages
1302-1304
Date Issued
1996
Author(s)
Schmidt, O.G.
Kirstaedter N.
Ledentsov N.M.
Bimberg D.
Ustinov V.M.
Egorov A.Y.
Zhukov A.E.
Maximov M.V.
Kop'ev P.S.
Alferov Z.I.
Abstract
The authors compare the threshold current density jth against the laser length of a single layer quantum dot (SLQD) laser with a sixfold multilayer quantum dot (MLQD) laser. Gain saturation is not observed in the MLQD laser. They calculate jth against the number of dot layers including gain saturation. The strong impact of thermal coupling of carriers on jth is demonstrated.
Type
journal article