Real-time double exposure holographic phase shifting interferometer using a photorefractive crystal

Labrunie, L.; Pauliat, Gilles; Launay, J.C.; Leidenbach, Steffen; Roosen, Gérald

doi:10.1016/s0030-4018(97)00121-1

Cited by 27 publications

(9 citation statements)

References 19 publications

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“…34 These configurations provide either a sequence of phase-shifted interferograms between different states of the vibrating object or a time averaged interferogram of the vibration pattern. More recently, Labrunie et al 35,36 proposed a so-called real time holographic interferometry (RT-HI) method based on anisotropic diffraction, i.e., the incident s-polarized light is diffracted as the p-polarized light and vice versa, in a Bi 12 GeO 12 (BGO) crystal. In this scheme, a refraction index grating is recorded by an overlapping signal and reference beam pulse linearly polarized along the same direction, at a certain instant of the object vibration.…”

Section: Introductionmentioning

confidence: 99%

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Imaging of transient surface acoustic waves by full-field photorefractive interferometry

Xiong

Glorieux

et al. 2015

Review of Scientific Instruments

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A stroboscopic full-field imaging technique based on photorefractive interferometry for the visualization of rapidly changing surface displacement fields by using of a standard charge-coupled device (CCD) camera is presented. The photorefractive buildup of the space charge field during and after probe laser pulses is simulated numerically. The resulting anisotropic diffraction upon the refractive index grating and the interference between the polarization-rotated diffracted reference beam and the transmitted signal beam are modeled theoretically. The method is experimentally demonstrated by full-field imaging of the propagation of photoacoustically generated surface acoustic waves with a temporal resolution of nanoseconds. The surface acoustic wave propagation in a 23 mm × 17 mm area on an aluminum plate was visualized with 520 × 696 pixels of the CCD sensor, yielding a spatial resolution of 33 μm. The short pulse duration (8 ns) of the probe laser yields the capability of imaging SAWs with frequencies up to 60 MHz.

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Section: Introductionmentioning

confidence: 99%

“…36 However, there are a few limitations in the implementation of previous RT-HI approaches. 38,39 First, the diffraction efficiency of the recorded index grating decreases during the reading process from pulse to pulse due to the partial erasing of the index grating by the reading pulses.…”

Section: Introductionmentioning

confidence: 99%

Imaging of transient surface acoustic waves by full-field photorefractive interferometry

Xiong

Glorieux

et al. 2015

Review of Scientific Instruments

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“…For more complete vibration analyses with amplitude and phase of vibration determination, or for transient events (like shocks), this temporal phase-shifting technique is no more appropriate. At the expense of an increased complexity and cost, interferometers comprising several CCD cameras can then be used to simultaneously acquire the interferograms corresponding to the different phase shifts [6].…”

Section: Introductionmentioning

confidence: 99%

Passive introduction of carrier fringes in real-time photo refractive interferometers for single interferogram analysis

Pauliat¹,

Roosen²,

Georges³

et al. 2006

J. Eur. Opt. Soc.-Rapid Publ.

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We propose a new technique to introduce carrier fringes in an holographic interferometric setup for deformation or vibration analyses. This technique makes use of the anisotropic diffraction processes of photorefractive crystals. The main advantage of the proposed technique is that it just involves static components, no moving parts or active components are required. This technique is demonstrated in a real-time interferometric setup operating at the wavelength of 1.06 µm and with a GaAs photorefractive crystal as the holographic medium.

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“…They can so perform quantitative phase measurement of high accuracy based on a single shot. Their holographic camera is breadboarded and has been successfully used in cw at 514 nm and was further used in pulsed illumination with a ruby laser (694 nm) [5]. This is the first use of pulsed illumination with a PRC on an industrial example (turbine blade under vibration).…”

Section: Introductionmentioning

confidence: 99%

Userfriendly and Compact Holographic Camera Based on Photorefractive Crystals. Applications in high Accuracy Metrology

Lemaire

Scauflaire

Georges

2000

Interferometry in Speckle Light

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Abstract. We present recent developments achieved in order to make compact and easy to handle a photorefractive holographic camera. The technological interest of photorefractive crystals as holographic recording medium will be shortly recalled. The reported improvement concerns the reduction of the optical head to some basic components (objective lenses, crystal and CCD camera) by use of optical fibers for light transportation. The new compact holographic head can be handled easily and placed in any position rendering this device more flexible and adaptable to any kind of problem. In addition, it offers the main advantage to make easier the interfacing with any kind of laser. Some applications are presented and show the versatility of the instrument as well as the quality of the results.

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Real-time double exposure holographic phase shifting interferometer using a photorefractive crystal

Cited by 27 publications

References 19 publications

Imaging of transient surface acoustic waves by full-field photorefractive interferometry

Imaging of transient surface acoustic waves by full-field photorefractive interferometry

Passive introduction of carrier fringes in real-time photo refractive interferometers for single interferogram analysis

Userfriendly and Compact Holographic Camera Based on Photorefractive Crystals. Applications in high Accuracy Metrology

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