Abstract
As many other ternary and quaternary compound semiconductors, GaInP shows natural superlattice ordering consisting of Ga-rich and In-rich (111) crystal planes which causes a strong change of many material properties. This paper presents three examples how these effects can be used to optimize optoelectronic devices or even to develop new device concepts: (i) The ordering-induced symmetry reduction causes a lifting of the valence-band degeneracy thus enabling the reduction of the threshold current in lasers owing to the reduced density of states. (ii) By ion implantation-induced disordering, we could fabricate lateral order/disorder structures which form the grating of optically pumped distributed feedback lasers. (iii) Due to the drastically anisotropic light propagation properties for optical waveguides parallel to the ordering planes, new waveguide eigenmodes can be designed. Thus we could realize a polarization converter, tunable by an external voltage mainly owing to the Franz–Keldysh effect. However, the domain structure of the ordered material may counterbalance these advantages as explicitly shown on the ordered laser structures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physica E: Low-dimensional Systems and Nanostructures
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
