A novel design of an IR photodetector operating at wavelengths around 10 μm is presented. It is based on a three-level quantum coherence effect in semiconductor quantum dots as measured in balanced-homodyne detection in a Mach–Zehnder interferometer. The advantage of this design is the combination of room-temperature operation and fast response time, whereas the major drawback is the high noise-equivalent power.
© 2004 Optical Society of America
N. H. Kwong, R. Binder, and M. Lindberg, "Quantum-dot quantum-interference infrared photodetector: design proposal and modeling of performance characteristics," Opt. Lett. 29, 2536-2538 (2004)