@article{article, title = {{Improved performance of In0.6Ga0.4As/AlAs0.67Sb0.33/InP quantum cascade lasers by introduction of AlAs barriers in the active regions}}, url = {{}}, year = {{2007}}, month = {{7}}, author = {{Revin DG and Cockburn JW and Steer MJ and Airey RJ and Hopkinson M and Krysa AB and Wilson LR and Menzel S}}, doi = {{10.1063/1.2767767}}, volume = {{91}}, journal = {{APPL PHYS LETT}}, issue = {{5}}, note = {{Accessed on 2025/05/18}}}