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Figure 1

From: Photonic Crystal Microchip Laser

Figure 1

Filtering by one-dimensional and axisymmetric PhC filters.

(a) Spatial PhC filter, consisting of periodic structure of parallel rods, results in one-dimensional filtering, as shown in single-pass angular far-field distribution, numerically (b) and experimentally (c). Respectively, PhCs of circular geometry (d) causes axisymmetric filtering (e,f). The (g) schematically shows the microchip laser structure, with inserted intracavity PhC filters (1D, axisymmetric and no filter) and (h) shows the experimentally measured far-field profiles in corresponding cases.

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