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Waveguide optical losses in InGaAs/AlAsSb quantum cascade laser

Optische Wellenleiterverluste in InGaAs/AlAsSb Quantenkaskadenlasern
 
: Revin, D.G.; Cockburn, J.W.; Menzel, S.; Yang, Q.K.; Manz, C.; Wagner, J.

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Journal of applied physics 103 (2008), Nr.4, Art. 043106, 4 S.
ISSN: 0021-8979
ISSN: 1089-7550
Englisch
Zeitschriftenaufsatz
Fraunhofer IAF ()
optical loss; optische Wellenleiterverluste; InGaAs/AlAsSb; quantum cascade laser; Quantenkaskadenlaser

Abstract
The authors present a technique for broadband study of the optical waveguides used for midinfrared quantum cascade lasers. This method allows insight into the waveguide properties and helps in improving the waveguide design. Using this method the waveguide losses in the whole range of waveguide transparency of about 1.8-9 µm have been found for a Lambda~4.4 µm In0.53Ga0.47As/AlAs0.56Sb0.44/InP quantum cascade laser. The polarization dependence of waveguide losses in a quantum cascade laser is discussed.

: http://publica.fraunhofer.de/dokumente/N-71785.html