Real-time three-sensitivity measurements based on three-color digital Fresnel holographic interferometry

Tankam, Patrice; Song, Qing; Karray, Mayssa; Li, Junchang; Desse, Jean-Michel; Picart, Pascal

doi:10.1364/ol.35.002055

Cited by 58 publications

(21 citation statements)

References 12 publications

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“…Shear strains at the lateral surface of the sample are evaluated by three‐color holographic . This method can provide full field 3D information on surface displacements as described in . The shear strains ε x , ε y , and ε xy are estimated by calculating the derivatives of the displacement fields.…”

Section: Methodsmentioning

confidence: 99%

Influence of two carbon plies on adhesion of unidirectional flax‐fibers reinforced epoxy composites

Karray

Triki²,

Poilâne

et al. 2014

Polymer Composites

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In this work, we undertook a comparative study of the dynamic dielectric analysis of two unidirectional epoxy composites: flax-fiber-reinforced epoxy and flax/carbon-fiber-reinforced epoxy (FCFRE). In both composites, three relaxation processes were identified. The first one is the water dipoles polarization imputed to the presence of polar water molecules in flax fiber. The second relaxation process associated with conductivity occurs as a result of the carriers charges diffusion noted for high temperature above glass transition and low frequencies. As for the third dielectric relaxation associated with the interfacial polarization effect is attributable to the accumulation of charges at the fibers/matrix interface. The presence of two carbon plies in the reinforcement gives rise to two interfacial polarization effects in the FCFRE composite. The analysis of the Maxwell-Wagner-Sillars and the water dipoles polarizations using the Havriliak-Negami model revealed that the presence of two plies of carbon can locally decrease the adhesion of flax fibers in the matrix. This analysis was supported by the thermal properties using a differential scanning calorimety and the mechanical properties using a short beam shear test. POLYM. COMPOS., 37:241-253, 2016.

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Section: Methodsmentioning

confidence: 99%

Influence of two carbon plies on adhesion of unidirectional flax‐fibers reinforced epoxy composites

Karray

Triki²,

Poilâne

et al. 2014

Polymer Composites

Self Cite

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“…Multiwavelength digital holography has the ability for not only color 3D imaging [19,20], but also dispersion imaging [21] and 3D shape measurement with a wide range by using multiwavelength phase unwrapping [22], due to the recording of quantitative phase information with multiple wavelengths. Temporal division [23][24][25], spatial division [26][27][28], and space-division multiplexing [19,20,29], which are generally adopted for multiwavelength imaging in an imaging system, can be merged into digital holography to record multiple wavelengths. In general imaging systems, wavelength information is temporally or spatially separated when recording image(s), as shown in Figure 1(a)-(e).…”

Section: Introductionmentioning

confidence: 99%

Multiwavelength Digital Holography and Phase-Shifting Interferometry Selectively Extracting Wavelength Information: Phase-Division Multiplexing (PDM) of Wavelengths

Tahara¹,

Otani²,

Arai³

et al. 2017

Holographic Materials and Optical Systems

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In this chapter, we introduce multiwavelength digital holographic techniques and a novel multiwavelength imaging technique. General multiwavelength imaging systems adopt temporal division, spatial division, or space-division multiplexing to obtain wavelength information. Holographic techniques give us unique multiwavelength imaging systems, which utilize temporal or spatial frequency-division multiplexing. Conventional multiwavelength digital holography systems have been combined with one of the methods listed above. We have proposed phase-shifting interferometry selectively extracting wavelength information, characterized as a multiwavelength threedimensional (3D) imaging technique based on holography and called phase-division multiplexing (PDM) of multiple wavelengths. In PDM, wavelength-multiplexed phaseshifted holograms are recorded, and multiwavelength information is separately extracted from the holograms in the space domain. Phase shifts are introduced for respective wavelengths to separate object waves with multiple wavelengths in the polar coordinate plane, and multiple object waves are selectively extracted by the signal processing based on phase-shifting interferometry. Additionally, the system of equations needed to obtain a multiwavelength 3D image is solved with less wavelengthmultiplexed images using two-step phase-shifting interferometry-merged phase-division multiplexing (2π-PDM), which makes the best use of 2π ambiguity of the phase and two-step phase-shifting method. The PDM techniques are reviewed and color 3D imaging ability is described with numerical and experimental results.

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“…On the other hand, a number of digital holographic techniques deal with color objects by using either offaxis [8][9][10] or phase-shifting interferometry [11]. Color digital holography presents additional challenges than single wavelength operation, owing to the dependence on wavelength of light propagation and phase-shifting techniques.…”

Section: Introductionmentioning

confidence: 99%

Single-shot color digital holography based on the fractional Talbot effect

et al. 2011

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We present a method for recording on-axis color digital holograms in a single shot. Our system performs parallel phase-shifting interferometry by using the fractional Talbot effect for every chromatic channel simultaneously. A two-dimensional binary amplitude grating is used to generate Talbot periodic phase distributions in the reference beam. The interference patterns corresponding to the three chromatic channels are captured at once at different axial distances. In this scheme, one-shot recording and digital reconstruction allow for real-time measurement. Computer simulations and experimental results confirm the validity of our method.

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Real-time three-sensitivity measurements based on three-color digital Fresnel holographic interferometry

Cited by 58 publications

References 12 publications

Influence of two carbon plies on adhesion of unidirectional flax‐fibers reinforced epoxy composites

Influence of two carbon plies on adhesion of unidirectional flax‐fibers reinforced epoxy composites

Multiwavelength Digital Holography and Phase-Shifting Interferometry Selectively Extracting Wavelength Information: Phase-Division Multiplexing (PDM) of Wavelengths

Single-shot color digital holography based on the fractional Talbot effect

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