Longitudinal imaging in biological tissues with a single laser shot correlation system

Bordenave, E.; Abraham, Emmanuel; Jonusauskas, Gediminas; Oberlé, J.; Rullière, C.

doi:10.1364/oe.10.000035

Cited by 16 publications

(8 citation statements)

References 8 publications

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“…The method, which has been already published in previous paper 5,6 , is based on so-called "time-gating" imaging which discriminates between early ballistic photons and time-delayed scattered photons. By selecting the ballistic photons, which did not experience any diffusion process in the sample, it becomes possible to obtain a clear image of the internal structures of the sample.…”

Section: Operating Principlementioning

confidence: 99%

Longitudinal imaging in biological tissues by use of femtosecond optical echography

Abraham¹,

Bordenave²,

Jonusauskas³

et al. 2003

Novel Optical Instrumentation for Biomedical Applications

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Section: Operating Principlementioning

confidence: 99%

Longitudinal imaging in biological tissues by use of femtosecond optical echography

Abraham¹,

Bordenave²,

Jonusauskas³

et al. 2003

Novel Optical Instrumentation for Biomedical Applications

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“…They use a fast photoelastic birefringence modulator to introduce sinusoidal phase shift between sample and reference lights, and four images with different phase shifts were thus recorded successively to reconstruct the enface OCT image. En-face OCT imaging using conventional sequentional phase shifting with the reference mirror by PZT is realized by several authors [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Real-time single-shot full-field OCT based on dual-channel phase-stepper optics and 2D quaternionic analytic signal processing

Hrebesh

Sato

2009

SPIE Proceedings

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We describe a novel compact real-time single-shot full-field optical coherence tomography based on a dual-channel phase-stepper optics, which employs a 2-D quaternionic analytic signal processing technique to reconstruct the en-face OCT image. The experimental setup was based on a Linnik type polarization Michelson interferometer followed by a dual-channel phase-stepper optics and a single CCD camera to capture two 180° phase stepped images simultaneously. The interferometer is illuminated using a SLD source with central wavelength of 842 nm and spectral bandwidth of 16.2 nm, yielding an axial resolution of 19.8 μm. Using a 10 X (0.25-NA) microscope objective and a single CCD camera, the system covers an area of 325μm x 300μm (325 × 300 pixels) with a transverse resolution of 4.4 μm. We demonstrate the feasibility of this system for real-time imaging of scattering specimens such as a diaptomus.

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“…For example, the depth resolution of gated imaging systems with short laser pulses could be enhanced with the aid of non-linear crystal. Bordenave et al [13] in 2002 achieved a 15 µm depth resolution in their imaging system with femto-seconds laser pulses. They used pulsed laser synchronization with a multiple quantum well structure, but it allows only longitudinal depth mapping.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional Machine Vision Using Gated Imaging System: A Numerical Analysis

Tan

Sluzek

Seet

et al. 2006

2006 IEEE Conference on Robotics, Automation and Mechatronics

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Various researchers have suggested techniques in gated imaging and "smart" pixels technologies that achieve simultaneous depth mapping and optical imaging with enhanced depth detection accuracy and resolutions range from a few cm to less than 1 mm. In this paper, we demonstrate how depth accuracy and resolution can be studied more systematically (and depending on the range detection technique). We propose that the depth detection and resolution study should be treated as two separate configurations. In particular, we recommend statistical approach for camera gating shorter than (or equal to) target irradiance and quantitative approach for gating time longer than target irradiance. A very accurate method by J. Busck is analyzed as an example of the statistical approach. The results indicate that the depth accuracy is less affected by the reflected Gaussian noise for longer range targets. The numerical analysis shows that it is necessary to introduce a correction based on the gating and target irradiance profiles to achieve accurate depth detection. An objective quantitative evaluation method is also discussed. It is suggested to replace the existing subjective measure in determining the depth resolution by the proposed approach. Supporting data for this approach will be presented in future works.

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Longitudinal imaging in biological tissues with a single laser shot correlation system

Cited by 16 publications

References 8 publications

Longitudinal imaging in biological tissues by use of femtosecond optical echography

Longitudinal imaging in biological tissues by use of femtosecond optical echography

Real-time single-shot full-field OCT based on dual-channel phase-stepper optics and 2D quaternionic analytic signal processing

Three-dimensional Machine Vision Using Gated Imaging System: A Numerical Analysis

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