Design of InSb-based quantum-well laser with emission line at 5.6 μm Somayeh Solgi, Sattar Mirzakuchaki and Morteza Sasani Ghamsari Eur. Phys. J. Plus, 136 4 (2021) 378 Published online: 10 April 2021 DOI: 10.1140/epjp/s13360-021-01381-4