Figure 5 | Light: Science & Applications

Figure 5

From: Silicon micromirrors with three-dimensional curvature enabling lensless efficient coupling of free-space light

Figure 5

(a) The power coupling efficiency of a single spherical mirror versus the dimensionless distance ratio d/zo at different values of the ratio zo/R. (b) The coupling behavior is related to the GB phase radius of curvature Rb versus the distance to beam waist z. The effect of the misalignment between the incident GB and the 3D mirror optical axes on the power coupling efficiency: the effect of shift misalignment is shown in (c) for δ/wo ratios of 0.1, 0.25 and 0.5 at zo/R=0.25 and 0.5, while the effect of rotational misalignment is shown in (d) for β/θdiv ratios of 0.1, 0.25 and 0.5. 3D, three-dimensional; GB, Gaussian beam.

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