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Digital holography

Development of digital holography in the long wave infrared range for assessment of space reflectors

Development of digital holography in the long wave infrared range for assessment of space reflectors

... lasers with thermal infrared imagers. This paper presents preliminary results obtained by both the consortium formed by CSL and the MRC, especialized in digital holography reconstruction. An innovative ...

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MOTION COMPENSATION IN DIGITAL HOLOGRAPHY FOR RETINAL IMAGING

MOTION COMPENSATION IN DIGITAL HOLOGRAPHY FOR RETINAL IMAGING

... Digital holography faces several issues altering images quality. Eye motion during image acquisition distorts the signal. In order to stabilize images of retinal features, im- age registration can be used. ...

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(DH) Noise and Signal scaling factors in Digital Holography in week illumination: relationship with Shot Noise.

(DH) Noise and Signal scaling factors in Digital Holography in week illumination: relationship with Shot Noise.

... of holography is to record, on a 2D detector, the phase and the amplitude of the light shining from an object under coherent ...in digital holography [2], whose main advantage is to perform the data ...

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Digital Holography at Long-Wave Infrared for Measuring the Deformation of Large Space Reflectors under Thermal Vacuum

Digital Holography at Long-Wave Infrared for Measuring the Deformation of Large Space Reflectors under Thermal Vacuum

... This method was successfully applied by Hansen in visible light for an object of the order of a few centimetres wide [6] by electronic speckle pattern interferometry (ESPI). Here we wish to validate the same principle ...

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Digital Holography and 3D Imaging: introduction to the joint feature issue in Applied Optics and Journal of the Optical Society of America A

Digital Holography and 3D Imaging: introduction to the joint feature issue in Applied Optics and Journal of the Optical Society of America A

... of digital holography and 3D ...upcoming Digital Holography and 3D Imaging Conference, which will be held 22–26 June 2019 in Vancouver, Canada, as part of the OSA Imaging and Applied Optics ...

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Thermal infrared and terahertz digital holography and their applications

Thermal infrared and terahertz digital holography and their applications

... Locatelli, M., et al., Real-time terahertz digital holography with a quantum cascade laser., Scientific Reports, 2015.. DIGITAL HOLOGRAPHY IN THZ WAVES. Locatelli, M., et al., Real-time [r] ...

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Signal and Noise scaling factors in digital holography

Signal and Noise scaling factors in digital holography

... proportional to the squared acquisition duration, whereas the noise, which is equal to the shot noise [8], is proportional to the acquisition duration, and to the number of optical modes used for reconstruction (area of ...

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Compressed digital holography: from micro towards macro

Compressed digital holography: from micro towards macro

... in digital holography for ...compressed digital holography at the micro ...sparse digital signal processing, holographic modalities are on the verge of practical high-quality ...

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Thermo-elastic deformation measurement of the EUCLID near infrared focal plane array by long wave infrared digital holography

Thermo-elastic deformation measurement of the EUCLID near infrared focal plane array by long wave infrared digital holography

... Fig. 1. Optical set-up for the DH measurements of the displacements of the NI-DS. Fig. 2. Measurement of the displacements of the STMD by digital holography and in parallel with a visible interferometer. ...

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Thermo-elastic deformation measurement of the Euclid near infrared focal plane array by long wave infrared digital holography

Thermo-elastic deformation measurement of the Euclid near infrared focal plane array by long wave infrared digital holography

... A. Optical set-up The Digital Holography (DH) system was first assembled on an optical table in the laboratory to check the design. The optical set-up for the NI-DS test is shown at Fig. 1. It is composed ...

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Digital Holography at Shot Noise Level

Digital Holography at Shot Noise Level

... V. C ONCLUSION In this paper we have studied the noise limits in digital holography. We have shown that in high heterodyne gain of the holographic detection (achieved when the object field power is much ...

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Digital Holography at Ultimate Shot Noise Level

Digital Holography at Ultimate Shot Noise Level

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...

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In vivo laser Doppler holography of the human retina

In vivo laser Doppler holography of the human retina

... * gl.puyo@gmail.com Abstract: The eye offers a unique opportunity for the non-invasive exploration of cardiovascular diseases. Optical angiography in the retina requires sensitive measurements, which hinders conventional ...

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Digital in-line holography for near field observation of liquid-liquid flows under astigmatic conditions

Digital in-line holography for near field observation of liquid-liquid flows under astigmatic conditions

... [1] Lamadie, F., L. Bruel and M. Himbert (2012). "Digital holographic measurement of liquid–liquid two-phase flows." Optics and Lasers in Engineering 50(12): 1716-1725. [2] Pan, G., and Meng, H., 2003. ...

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Digital in-line holography for the characterization of two phase flows in astigmatic systems

Digital in-line holography for the characterization of two phase flows in astigmatic systems

... (090.1995) Digital holography, ...Introduction Digital Holography (DH) is well-known for allowing, in a single shot, the complete 3D reconstruction of any particulate ...

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Combined holography and thermography in a single sensor through image-plane holography at thermal infrared wavelengths

Combined holography and thermography in a single sensor through image-plane holography at thermal infrared wavelengths

... The present paper is a continuation of previous ones and we demonstrate for the first time to the best of our knowledge that LWIR digital holography allows simultaneous recording of the surface shape and ...

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Phase-sensitive narrowband heterodyne holography

Phase-sensitive narrowband heterodyne holography

... Yoshio Hayasaki, and Toyohiko Yatagai. Color digital holography using a single monochromatic imaging sensor. Opt. Lett., 37(15):3153–3155, Aug 2012. [33] Tatsuki Tahara, Akifumi Maeda, Yasuhiro Awatsuji, ...

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Digital in-line holography for near field observation of liquid-liquid flow

Digital in-line holography for near field observation of liquid-liquid flow

... 1 Introduction Digital holography (DH) is a suitable technic, by which particles can be positioned in 3D space using a single camera. It is used for a broad range of applications including particle image ...

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Signal to noise characterization of an inverse problem-based algorithm for digital inline holography

Signal to noise characterization of an inverse problem-based algorithm for digital inline holography

... in-line holography setup We consider an in-line holographic setup (see figure 1) where studied particles are illuminated by the laser beam and both reference wave and object wave interfere and are recorded by the ...

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Real time Quantum state holography using coherent transients

Real time Quantum state holography using coherent transients

... (Dated: 30 janvier 2006) In a two level atom, real-time quantum state holography is performed through interferences between quantum states created by a reference pulse and a chirped pulse resulting in coherent ...

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