Dual plane on-axis digital holography with dual wavelength phase unwrapping

Dual plane on-axis digital holography based on LCOS spatial light modulator with the benefits of dual wavelength phase unwrapping method is presented. Computer-generated chirp like complex reflectance were displayed on LCOS spatial light modulator for recording of holograms at two slightly displaced planes for two wavelengths which were later processed to suppress the dc term and twin image in the reconstructed image of each wavelength. The dual wavelength phase unwrapping method is used on the reconstructed wrapped phases of each wavelength to successfully unwrap the surface profile and result is verified by comparing it with measurement made by the optical profiling system.

[1]  J. Gass,et al.  Phase imaging without 2pi ambiguity by multiwavelength digital holography. , 2003, Optics letters.

[2]  Yuxuan Zhang,et al.  Reconstruction of a complex object from two in-line holograms. , 2003, Optics express.

[3]  李艳,et al.  Twin image elimination from two in-line holograms via phase retrieval , 2012 .

[4]  D. Gabor.  A New Microscopic Principle , 1948, Nature.

[5]  Jindong Tian,et al.  Frequency domain phase retrieval of simultaneous multi-wavelength phase-shifting interferometry , 2016 .

[6]  Claas Falldorf,et al.  Reference wave adaptation in digital lensless Fourier holography by means of a spatial light modulator , 2011, Optical Metrology.

[7]  Bhargab Das,et al.  Dual plane in-line digital holographic microscopy. , 2010, Optics letters.

[8]  Unnikrishnan Gopinathan,et al.  Generalized in-line digital holographic technique based on intensity measurements at two different planes. , 2008, Applied optics.

[9]  A. Asundi,et al.  Imaging analysis of digital holography. , 2005, Optics express.

[10]  Wolfgang Osten,et al.  Reconstruction of in-line digital holograms from two intensity measurements. , 2004, Optics letters.

[11]  Robert Magnusson,et al.  Single-shot, dual-wavelength digital holography based on polarizing separation. , 2011, Applied optics.

[12]  I. Yamaguchi,et al.  Phase-shifting digital holography. , 1997, Optics letters.

[13]  J. Goodman.  Introduction to Fourier optics , 1969 .

[14]  E. Leith,et al.  Reconstructed Wavefronts and Communication Theory , 1962 .

[15]  Lu Rong,et al.  Dual-plane in-line digital holography based on liquid crystal on silicon spatial light modulator. , 2014, Applied optics.