Читать книгу Transparent Ceramics - Adrian Goldstein - Страница 20

As seen in Figure 1.2, the relevant inorganic solids (ceramics and certain glass-ceramics) exhibit a broad optical transmission window ending quite abruptly at short and long wavelengths (high and low frequencies, respectively) termed cutoff edges. The short wavelength edge is often called UV edge, while the long wavelength edge is correspondingly called the IR edge, or MIR edge. Strong absorptions occur off the two cutoff edges, however involving different physical mechanisms, briefly discussed in Section 2.4.1 and 2.4.2.