One of the elements to which multiple spectra have been attributed is carbon, which was at one time supposed to possess four different spectra: of these one has been shown to be due to oxide of ...

AdTech Optics, a California-based developer of quantum cascade lasers, offers a broad selection of products spanning the mid-infrared range.Lasers are available at wavelengths of 3.8, 4.71, 7.23 ...