Injectorless Quantum Cascade Laser with very low voltage-defect grown by metal-organic chemical vapor deposition

We demonstrate an In
_0.66
Ga
_0.34
As/In
_0.355
Al
_0.645
As strain-compensated injectorless cascade laser; grown by MOCVD, with voltage defect ~30 meV, which is much lower compared to heterogeneous injector cascade laser with 79 meV and conventional cascade laser with 140 meV.