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Experimental reciprocal space maps of an Er:PPLN sample. The nominal period of the structure is . (a) Symmetrical (0 0 12) reflection. (b) Asymmetrical (2 2 12) reflection with grating exit. The intensity scale is normalized to the peak and is reported on the right.
Linear scan of the reciprocal space intensity distribution along the horizontal streak visible in map of Fig. 1(a). The parameter reported onto the abscissa axis runs parallel to the streak.
Schematic sketch of the sample structure. On the left is shown an as-grown crystal boule with the domelike domain structure. The dashed lines indicate how a slab is extracted from the boule, polished, and measured (on the right). The effect of the domain shape on reciprocal lattice points is also depicted.
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