High Performance Quantum Cascade Lasers

Quantum Cascade Lasers (QCLs) are semiconductor lasers that, in contrast to common diode lasers, operate on intersubband transitions in the conduction band of the materials

Broad Area Devices

Many QCL devices tend toward a laser core design consisting of 30-40 stages (about 1-2 μm thick,) with a device length of 2-5 mm and

Surface Emission

Quantum mechanical selection rules dictate that laser light generated by a QCL must be polarized along the growth direction of the superlattice in the laser

Lattice Mismatched Substrates

The Lattice Constant of a semiconductor describes the spacing (in angstroms) of the atoms in the semiconductor crystal of that material. Growing different semiconductor material

2018 Intersubband Optoelectronics Lab