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Conical diffraction and Bessel beam formation with a high optical quality biaxial crystal

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Figure

Fig. 2. The intensity due to B0 (a), B1 (b) and the conically diffracted Gaussian field, B0 + B1 (c) as the beam propagates away from the focal image
Fig. 3. Circularly polarized light is focused into the crystal with a x10 objective to achieve a narrow waist (10crystals entrance face (due to the short focal length of the objective) is imaged onto the CCD µm)
Fig. 5(b) which shows a calculation of the radial distribution of the B0 and B1 electric field
Fig. 7. A comparison of experiment with theory (dashed line) in the focal image plane; Radial distance is measured from the centre of the cylinder associated with conical refraction (Fig
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