Quantum Cascade lasers at the University of Central Florida
The students and scientists of the Intersubband Optoelectronics Lab consistently push the boundaries of quantum cascade laser performance. Utilizing the state of the art technology and facilities available at the Unviersity of Central Florida, our lab designs, processes, tests, and prototypes midinfrared devices that set records and break new ground in fundamental scientific research.



World Record Pulsed Wall-Plug Efficiency

We have just set the record for pulsed QCL efficiency. Our two material active region design was measured to have a wall-plug efficiency of 28.3% in a 40 stage structure. This result is largely due to the high injection efficiency (75%) of the active region design. See
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Room Temperature QCLs Grown on GaAs

QCLs on computer chips just got one step closer to reality. We have just demonstrated room temperature lasing of a quantum cascade laser grown on a lattice-mismatched substrate. An InP based design was grown on a GaAs substrate, utilizing a buffer layer between the InP
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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
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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
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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
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2018 Intersubband Optoelectronics Lab