ENHANCED BACKSCATTERING AND BLAZING EFFECT FROM GRATINGS, QUASI-GRATINGS AND RANDOMLY ROUGH SURFACES

The blazing effect is probably the most important property of diffract ion gratings used for spectroscopic purposes. On the other hand, the e nhanced backscattering phenomenon has been generally studied in the fr amework of scattering from randomly rough surfaces. Using numerical re sults from rigorous theories, it will be shown that these phenomena, w hich have very different origins, should have more precise definitions . In a special case of a randomly rough surface formed by random corne rs, it will be shown that the effects of these phenomena are sometimes very difficult to distinguish.