Polarization-splitting common-path interferometer based on a zero-twist liquid crystal display

Moreno, Ignacio; Davis, Jeffrey A.; Klein, Felix A.; Mitry, Mark J.

doi:10.1364/ao.47.001797

Cited by 14 publications

(8 citation statements)

References 11 publications

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“…In our approach we use the LCOS-SLM itself to generate the interferometer, thus avoiding any additional components. We follow the scheme presented in [20]. This is based on rotating the input polarizer (P1) so a significant component of the input beam is oriented perpendicular to the LC director of the SLM.…”

Section: Common-path Interferometermentioning

confidence: 99%

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Phase-Shifting Common-Path Polarization Self-Interferometry for Evaluating the Reconstruction of Holograms Displayed on a Phase-Only Display

et al. 2022

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In this work we apply a phase-shifting interferometry (PSI) to evaluate the reconstruction of complex-valued holograms displayed onto a phase-only spatial light modulator (SLM). The interferometer is vibration-free since it uses a common-path polarization arrangement based on the SLM itself, which is used simultaneously to display the hologram and to apply the phase-shifting values. The change from the hologram display configuration to the interferometer configuration involves only a rotation of a polarizer. The continuous phase modulation provided by the SLM allows using PSI with arbitrary phase bias values. Several examples are demonstrated by generating different combinations of modes with an efficient on-axis hologram encoding technique.

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Section: Common-path Interferometermentioning

confidence: 99%

“…While in ref. [20] the interferometer was demonstrated, here we perform quantitative phase measurements. To this aim we apply the well-known PSI algorithms by adding a known constant phaseshift φ between two beams [11].…”

Section: Common-path Interferometermentioning

confidence: 99%

Phase-Shifting Common-Path Polarization Self-Interferometry for Evaluating the Reconstruction of Holograms Displayed on a Phase-Only Display

et al. 2022

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“…The above system can be easily converted into a polarization sensitive common path interferometer by addressing a grating with a very low frequency [11]. Figure 4 shows the optical setup.…”

Section: Common Path Pdg Based Polarization Interferometermentioning

confidence: 99%

Programmable liquid crystal waveplate polarization gratings as elements for polarimetric and interference applications

Moreno

Davis

2010

EPJ Web of Conferences

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We review the use of a parallel aligned nematic liquid crystal spatial light modulator as a very useful and flexible device for polarimetric and interferometric applications. The device acts as a programmable pixelated waveplate, and the encoding of a linear grating permits its use as a polarization beam splitter. When a grating with a reduced period is encoded, the diffracted beams are spatially separated and the device can be used for polarimetric analysis. On the contrary when a large period grating is displayed, the beams are not spatially separated, and they are useful to realize a common path interferometric system with polarization sensitivity. The flexibility offered by the programmability of the display allows non-conventional uses, including the analysis of light beams with structured spatial polarizations.

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“…In phase-shifting interferometry (PSI) they are employed to impart controlled phase bias to the interferograms to retrieve the target phase function [2]. LC-SLMs can be used to display spatially retardance functions that provide a common-path interferometric arrangement [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of Fourier transform holograms by a self-interferometric technique

et al. 2022

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We present a technique that combines an encoding method to display complex-valued holograms onto a phase-only spatial light modulator (SLM) with a phase-shifting interferometric (PSI) technique for experimentally evaluating the generated complex-valued optical fields. We demonstrate an efficient common-path polarization interferometer based on the SLM itself, not requiring any external additional element. The same setup can be used to simultaneously display the complex hologram and to apply the phase-shifting values required to retrieve the phase distribution of the optical field. A simple rotation of a polarizer allows to change from the intensity configuration to the interferometer configuration.

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Polarization-splitting common-path interferometer based on a zero-twist liquid crystal display

Cited by 14 publications

References 11 publications

Phase-Shifting Common-Path Polarization Self-Interferometry for Evaluating the Reconstruction of Holograms Displayed on a Phase-Only Display

Phase-Shifting Common-Path Polarization Self-Interferometry for Evaluating the Reconstruction of Holograms Displayed on a Phase-Only Display

Programmable liquid crystal waveplate polarization gratings as elements for polarimetric and interference applications

Experimental evaluation of Fourier transform holograms by a self-interferometric technique

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