Figure 6
Reconstructed transmitted intensity as a function of output angle. These data were collected by replacing the fluorescent screen with a large area detector and scanning it across the diffraction pattern. This method records the integral of the diffraction pattern, which can be numerically differentiated to reconstruct a quantitative measure of the diffraction efficiency. Results for grating pitches of (a) 12 µm, (b) 8 µm and (c) 6 µm are shown. |