Monolithic integration of quantum cascade laser, quantum cascade detector, and passive components for absorption sensing at [lambda]= 4.6 μm

J Midkiff, KM Yoo, H Dalir… - Quantum Sensing and …, 2020‏ - spiedigitallibrary.org
With the mid-infrared spectral region (3 to 20 µm) home to the fundamental absorption peaks
of most molecules, the region has come to be known as the “molecular-fingerprint” region …