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Effects of strain and GaInP2 superlatice ordering on laser polarization.

Einfluss der Verspannung und der Übergittersymmetrie von GaInP2 auf die Laserpolarisation
: Forstmann, G.G.; Barth, F.; Schweizer, H.; Moser, M.; Geng, C.


Semiconductor Science and Technology 9 (1994), pp.1268-1271 : Abb.,Tab.,Lit.
ISSN: 0268-1242
ISSN: 1361-6641
Journal Article
Fraunhofer IAF ()
laser polarization; Laserpolarisation; semiconductor laser; strain; Verspannung

Direction-dependent transition matrix elements are calculated as a function of strain and superlattice ordering for GaInP using a 6 x 6 LK Hamiltonian. The predicted direction dependence is in excellent agreement with the measured polarization of laser emission from broad-area strained GaInP QW lasers. Lasers with cavities oriented along the (011) direction lase with a polarization direction tilted towards the ordering planes. Lasers with (011)-oriented stripes and disordered structures emit with the conventional TE or TM slab-waveguide polarization normally expected for strained-layer lasers.