Reduction of the threshold current density of GaAs/AlGaAs quantum cascade lasers by optimized injector doping and growth conditions

Sirtori, 1998, Appl. Phys. Lett, 73, 3486, 10.1063/1.122812 Page, 2001, Appl. Phys. Lett., 78, 3529, 10.1063/1.1374520 Page, 2002, Semicond. Sci. Technol., 17, 1312, 10.1088/0268-1242/17/12/317 Carder, 2003, Appl. Phys. Lett., 82, 3409, 10.1063/1.1576908 Pflügl, 2003, Appl. Phys. Lett., 83, 4698, 10.1063/1.1633021 Anders, 2002, Appl. Phys. Lett., 80, 1864, 10.1063/1.1461055 Beck, 2002, Science, 295, 301, 10.1126/science.1066408 Teissier, 2004, Appl. Phys. Lett., 85, 167, 10.1063/1.1768306 Barbieri, 2001, Appl. Phys. Lett., 78, 282, 10.1063/1.1332105 Giehler, 2003, Appl. Phys. Lett., 82, 671, 10.1063/1.1541099 Lee, 2004, Semicond. Sci. Technol., 19, S45, 10.1088/0268-1242/19/4/017 Liu, 2000, Vol. 66 Straub, 2002, Appl. Phys. Lett., 80, 2845, 10.1063/1.1472473