Quantum cascade lasers based on guided modes at a metal-semiconductor interface
Abstract
Summary form only given. Planar waveguides for long-wavelength quantum cascade (QC) lasers require thick cladding layers. This prolongs and complicates the growth and processing procedures of these lasers. In this paper we demonstrate that optical waveguiding for a laser in this wavelength range can also be achieved using electromagnetic surface waves at a metal-semiconductor interface directly above the active region of the laser. No cladding layer is needed. The interface-guided modes are transverse-magnetic modes existing at the interface between a metal and a semiconductor, which have dielectric constants opposite in sign. Therefore, the metal layer, which is usually deposited on the top surface of a semiconductor laser for the purpose of an electric contact, can be also exploited to provide the waveguide interface. Show more
Publication status
publishedExternal links
Book title
Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics (CLEO '98)Journal / series
OSA Technical DigestVolume
Pages / Article No.
Publisher
Optical Society of AmericaEvent
Organisational unit
03759 - Faist, Jérôme / Faist, Jérôme
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