Microdiffraction imaging of dislocation densities in microstructured samples D. Lübbert, T. Baumbach, V. Holý, P. Mikulík, L. Helfen, P. Pernot, M. Elyyan, S. Keller, T. M. Katona, S. P. DenBaars and J. S. Speck EPL, 82 5 (2008) 56002 Published online: 26 May 2008 DOI: 10.1209/0295-5075/82/56002