Ao TANG, Bin LAN, Feng SHEN. Simulation of Generating Vortex Beam with Controllable Mode Based on Deformable Mirror with Continuous Surface[J]. Acta Photonica Sinica, 2022, 51(1): 0151120
- Acta Photonica Sinica
- Vol. 51, Issue 1, 0151120 (2022)
Fig. 1. The ratio of the inner and outer radius of the optimal annular spiral phase with different topological charges
Fig. 2. Comparison of the mode purity of the generated vortex beam with different mode by using DM with different arrangement of drivers，there are 15 drivers on the first ring，common difference=4，5，6，7，and five rings
Fig. 3. Schematic diagram of the DM with continuous surface and ring-arranged actuators
Fig. 4. Circular spiral wavefront generated by the DM with continuous surface
Fig. 5. Schematic diagram of using DM to generate vortex beams
Fig. 6. The intensity of the vortex beams generated by the DM with continuous mirror
Fig. 7. The phase of the vortex beams generated by the DM with continuous mirror
Fig. 8. The mode purity of obtained vortex beam with l=1~5 on u2 plane
Fig. 9. The residual distribution of annular spiral wavefront generated via DM with continuous surface
Fig. 10. Amplitude profile（black solid curve）of the vortex beams created by focusing a circle spiral phase and the lth Bessel function（blue dashed curve），The vertical dotted lines indicate the position of the second roots of the Bessel function
Fig. 11. The amplitude of the vortex beams after filtering
Fig. 12. The phase of the vortex beams after filtering
Fig. 13. The mode purity of vortex beams with l=1~5 after filtering
Fig. 14. The proportion of power loss after spatial filtering
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