Fig. 1. Schematic diagram of quantitative phase measurement of digital holographic microscopy

Fig. 2. Two typical holographic microscopy examples

Fig. 3. Hologram and spectrum of on-axis and off-axis holography

Fig. 4. Schematic diagram of spectral overlap and separation in holography

Fig. 5. Hologram and phase demodulation results of four-step phase shift method

Fig. 6. Phase demodulation and reconstruction process of frequency domain filtering method

Fig. 7. Schematic diagram of spatial-frequency domain for slightly off-axis interferometry

Fig. 8. Main phase aberrations in holographic microscopy

Fig. 9. Surface plot of Zernike polynomial and Chebyshev polynomial sequences

Fig. 10. Phase distortion correction by phase subtraction in double exposure

Fig. 11. Schematic diagram of position-adjustable lens

Fig. 12. Schematic diagram of telecentric structure configuration method

Fig. 13. Common path digital holography using grating and spatial filtering

Fig. 14. Common path digital holography based on beam-splitting prism and point diffraction

Fig. 15. Device for self-referencing common optical path digital holographic microscopy using Lloyd's mirror

Fig. 16. Center point located at +1-order component based on spectral sidebands of hologram

Fig. 17. Filter windows for different spatial filtering methods

Fig. 18. Schematic diagram of zero-filling method

Fig. 19. Block diagram of PCA-based phase-aberration compensation method

Fig. 20. Block diagram of automatic high order aberrations correction based on orthonormal polynomials fitting over irregular shaped aperture

Fig. 21. Zernike polynomial fitting based on deep learning background recognition realizes aberration correction

Fig. 22. Automatic aberration compensation based on deep learning