@article{16kubis2010, author = "Tillmann C Kubis and Saumitra Mehrotra and Gerhard Klimeck", title = "Design concepts of terahertz quantum cascade lasers: Proposal for terahertz laser efficiency improvements", journal = "Applied Physical Letters", year = "2010", volume = "97", number = "26", note = "Appl. Phys. Lett. 97, 261106 (2010);doi:10.1063/1.3524197", url = "https://engineering.purdue.edu/gekcogrp/publications/pubs_src/DOC16_paper.pdf", }