Short-Wavelength Quantum-Cascade Lasers
Apr 1, 2007 — There exists a gap in the performance of semiconductor lasers in the 3- to 5-μm-wavelength range, a spectral range of particular interest for molecular spectroscopy as well as for applications such as directed infrared countermeasures. The 3- to 5-μm range is important not only because the characteristic absorption bands of, e.g., CO, N2O, HCl and CH2O, lie within this range, but also because there is an atmospheric transparent window in this range.
Because semiconductor lasers...