Yanna Han, Xinqi Hu, Bing Dong. Iterative Extrapolation Method to Expand Dynamic Range of Shack-Hartmann Wavefront Sensors[J]. Acta Optica Sinica, 2020, 40(16): 1611004
- Acta Optica Sinica
- Vol. 40, Issue 16, 1611004 (2020)
Fig. 1. Starting 3×3 spots in iterative extrapolation method
Fig. 2. Starting 3×3 spots and their row and column numbers
Fig. 3. Searching spots around starting 3×3 array
Fig. 4. Searching spots around new 3×3 array
Fig. 5. Examples of simulation. (a) Reference spot array; (b) spot array with aberration; (c) tested wavefront; (d) reconstructed wavefront; (e) reconstruction error
Fig. 6. Dynamic range ratio between iterative extrapolation method and traditional method versus Zernike order
Fig. 7. Dynamic range of SHWS with iterative extrapolation method versus F number
Fig. 8. Dynamic range of SHWS with iterative extrapolation method versus number of subapertures
Fig. 9. Optical setup for iterative extrapolation SHWS experiment
Fig. 10. Experimental results of convex lens test. (a) Spot array produced by reference wavefront; (b) spot array produced by distorted wavefront; (c) Zernike coefficients of reconstructed wavefront; (d) reconstructed wavefront
Fig. 11. Experimental results of cylindrical lens test. (a) Spot array produced by distorted wavefront; (b) Zernike coefficients of reconstructed wavefront; (c) reconstructed wavefront
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Table 1. Dynamic range of SHWS with iterative extrapolation method
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