Quantum Cascade Lasers: Where They Are and Where They're Going
QCLs are carving a clearer niche in photonics applications, namely in defense and security, medical diagnostics, atmospheric gas sensing and mid-IR imaging. Since its first demonstration more than two decades ago, the quantum cascade laser (QCL) has proved a versatile, powerful tool in the lab and in the field. It is smaller and faster, and requires less power than earlier Fourier transform infrared (FTIR) and mass spectroscopy systems. And its continued evolution is anticipated across the
Photonics Spectra, June 2015