Figure 4
Comparison between the measured waveguide transmission (dots, the dashed line connects the points as a guide for the eye) and the predicted transmission according to (16) or (17) (solid line) depending on photon energy for two waveguides with Be cores sandwiched between Mo layers. The cover layers have thicknesses of d1 = 5.5 nm, while the core thicknesses are d2 = 74 nm in (a) and d2 = 110 nm in (b). The transmission coefficients in (a) and (b) are different as the beam aperture was opened from 50 µm (a) to 100 µm (b). |