Fig. 1. Scheme of the proposed SPP-OSH system. BSn, beam splitters; AOF, acousto-optic frequency shifter; Mn, mirror; pn, pupils; Ln, thin lens; SM, scanning mirror; PD, photodetector.

Fig. 2. (a) Real part, (b) imaginary part, and (c) phase profile of the hologram recorded with the conventional OSH; (d) real part, (e) imaginary part, and (f) phase profile of the hologram recorded with the proposed SPP-OSH.

Fig. 3. Hologram reconstructions of a pinhole. Intensity profile of the reconstruction using (a) the OSH and (b) SPP-OSH. (c) Plot image across the center of the reconstructed point.

Fig. 4. Hologram reconstructions of a pinhole. Intensity profile of the reconstruction using (a) the OSH and (b) SPP-OSH. (c) Plot image across the center of the reconstructed point.

Fig. 5. Resolution chart.

Fig. 6. Reconstructed images of the resolution chart at the focal plane of the object with (a) OSH and (b) SPP-OSH. Corresponding plot profiles across the horizontal centerlines are given in (c) and (d).

Fig. 7. Example 1: Resolution chart reconstructions with the OSH in (a) and (c); with the SPP-OSH in (b) and (d).

Fig. 8. Object with two plane images located at (a) z1 and (b) z2.

Fig. 9. (a) Real part and (b) imaginary part of the conventional OSH hologram; (c) real part and (d) imaginary part of the proposed SPP-OSH hologram.

Fig. 10. Reconstructed images while Δz=5.5  mm (first row) and 11 mm (second row), using the OSH method, given in (a), (b), (e), and (f); similar figures using the SPP-OSH method are given in (c), (d), (g), and (h).

Fig. 11. Comparison of the SPP-OSH and OSH: the correlation between the reconstructed images and the original images in terms of the depth interval of the object planes.

Fig. 12. Comparison of the SPP-OSH and DW-OSH: the correlation between the reconstructed images and the original images in terms of the depth interval of the object planes.