Quantum Wells as Light Sources

A quantum well is an extremely thin layer of low-bandgap semiconductor material sandwiched between thicker layers of high-bandgap material. The narrowness of this well creates discrete energy levels and changes electron-hole transport through the semiconductor. Utilizing quantum wells in modern light sources advances laser technology by widening the range of precise, achievable wavelengths. This optimizes wavelength control and tuning, increases modulation speeds, lowers energy loss, and reduces the overall system size. This research project examines the physics behind quantum wells and the importance of these advancements in modern technology.