ZnO/AlN Clad Waveguides for AlGaN-Based Quantum Cascade Lasers
Artikel i vetenskaplig tidskrift, 2013

Waveguide designs for AlGaN-based near-infrared quantum cascade lasers are proposed and analyzed using optical mode solvers. Because of the poor electrical conductivity, AlN is not a suitable cladding material for the AlN/GaN/AlGaN gain region. Instead we propose the use of ZnO as a conductive top cladding and to embed the gain region between AlGaN current injection and extraction regions so that an AlN substrate can be used as the lower cladding. We also examine the use of an AlN template on a SiC substrate and find that it can also provide sufficient mode confinement with negligible radiation loss into the SiC substrate. We identify a single mode ridge waveguide design with reasonable mode confinement (40%) and loss (39 cm-1).

Författare

Martin Stattin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Jörgen Bengtsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Anders Larsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Japanese Journal of Applied Physics

0021-4922 (ISSN)

Vol. 52 054001 - 054001

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Telekommunikation

DOI

10.7567/JJAP.52.054001