1. Egidijus Auksorius

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    1. Mentioned In 18 Articles

    2. In vivo imaging of the human cornea with high-speed and high-resolution Fourier-domain full-field optical coherence tomography

      In vivo imaging of the human cornea with high-speed and high-resolution Fourier-domain full-field optical coherence tomography
      Corneal evaluation in ophthalmology necessitates cellular-resolution and fast imaging techniques that allow for accurate diagnoses. Currently, the fastest volumetric imaging technique is Fourier-domain full-field optical coherence tomography (FD-FF-OCT), which uses a fast camera and a rapidly tunable laser source. Here, we demonstrate high-resolution, high-speed, non-contact corneal volumetric imaging in vivo with FD-FF-OCT that can acquire a single 3D volume with a voxel rate of 7.8 GHz. The spatial coherence ...
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    3. In vivo imaging of human cornea with highspeed and high-resolution Fourier-domain full-field optical coherence tomography

      In vivo imaging of human cornea with highspeed and high-resolution Fourier-domain full-field optical coherence tomography
      : Corneal evaluation in ophthalmology necessitates cellular-resolution and fast imaging techniques allowing accurate diagnoses. Currently, the fastest volumetric imaging technique is Fourier-domain full-field optical coherence tomography (FD-FF-OCT) that uses a fast camera and a rapidly tunable laser source. Here, we demonstrate high-resolution, highspeed, non-contact corneal volumetric imaging in vivo with FD-FF-OCT that can acquire a single 3D volume with a voxel rate of 7.8 GHz. The spatial coherence of the ...
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    4. Light-efficient beamsplitter for Fourier-domain full-field optical coherence tomography

      Light-efficient beamsplitter for Fourier-domain full-field optical coherence tomography
      Any full-field optical coherence tomography (FF-OCT) system wastes almost 75% of light, including 50% of the OCT signal, because it uses a 50/50 beamsplitter (BS) in the standard implementation. Here, a design of a light-efficient BS is presented that loses almost no light when implemented in Fourier-domain FF-OCT. It is based on pupil engineering and a small highly asymmetric BS. The presented signal-to-noise ratio (SNR) analysis demonstrates almost four ...
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    5. Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging

      Compact and Mobile Full-Field Optical Coherence Tomography Sensor for Subsurface Fingerprint Imaging
      Conventional fingerprint sensors that are deployed in real-life applications lack the ability to peer inside a finger beyond the external surface. Subsurface information can provide complimentary biometric characteristics associated with the finger. The subsurface fingerprints can also be employed when the quality of the external/surface fingerprints is affected. One of the most promising technologies for imaging below the surface of an external fingerprint is full-field optical coherent tomography (FF-OCT ...
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    6. High-throughput dark-field full-field optical coherence tomography

      High-throughput dark-field full-field optical coherence tomography
      Full-field optical coherence tomography (FF-OCT) can rapidly acquire 2D en face OCT images through a scattering medium. However, the standard interferometer configurations waste almost 75% of light. In addition, specular reflections can saturate the detector, limiting FF-OCT performance. Here, we report on a high-throughput dark-field (HTDF) FF-OCT configuration that efficiently uses the available light budget and allows suppressing specular reflections. Specifically, we demonstrate that images acquired with the HTDF FF-OCT ...
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    7. Computational aberration correction in spatiotemporal optical coherence (STOC) imaging

      Computational aberration correction in spatiotemporal optical coherence (STOC) imaging
      Spatiotemporal optical coherence (STOC) imaging is a new technique for suppressing coherent crosstalk noise in Fourier-domain full-field optical coherence tomography (FD-FF-OCT). In STOC imaging, the timevarying inhomogeneous phase masks modulate the incident light to alter the interferometric signal. Resulting interference images are then processed as in standard FDFF-OCT and averaged incoherently or coherently to produce crosstalk-free volumetric OCT images of the sample. Here, we show that coherent averaging is suitable ...
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    8. Crosstalk-free volumetric in vivo imaging of a human retina with Fourier-domain full-field optical coherence tomography

      Crosstalk-free volumetric in vivo imaging of a human retina with Fourier-domain full-field optical coherence tomography
      Fourier-domain full-field optical coherence tomography (FD-FF-OCT) is currently the fastest volumetric imaging technique that is able to generate a single 3-D volume of retina in less than 9 ms, corresponding to a voxel rate of 7.8 GHz. FD-FF-OCT is based on a fast camera, a rapidly tunable laser source, and Fourier-domain signal detection. However, crosstalk appearing due to multiply scattered light corrupts images with the speckle pattern, and therefore ...
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    9. Subsurface and Layer Intertwined Template Protection Using Inherent Properties of Full-Field Optical Coherence Tomography Fingerprint Imaging

      Subsurface and Layer Intertwined Template Protection Using Inherent Properties of Full-Field Optical Coherence Tomography Fingerprint Imaging
      The emergence of Full Field-Optical Coherence Tomography (FF-OCT) for fingerprint imaging has shown its ability in addressing and solving the drawbacks of traditional fingerprinting solutions such as spoofing attacks, low accuracy for abraded fingerprint. With the availability of multiple internal fingerprints (from subsurface captured at different depths), it is also essential to consider the aspects of ideal biometrics where the privacy of the fingerprint data is preserved. In this work ...
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    10. In vivo volumetric imaging by crosstalk-free full-field OCT

      In vivo volumetric imaging by crosstalk-free full-field OCT
      Cellular resolution imaging of biological structures has always been a challenge due to strong scattering that limits the achievable transverse resolution or imaging penetration depth. Recently, a major advancement toward high-resolution and volumetric imaging was achieved by implementing a parallel detection (i.e., full field) into Fourier-domain optical coherence tomography. The drawback of using parallel detection is that scattered light can travel laterally and get mapped improperly at a camera ...
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    11. Fast subsurface fingerprint imaging with full-field optical coherence tomography system equipped with a silicon camera

      Fast subsurface fingerprint imaging with full-field optical coherence tomography system equipped with a silicon camera
      Images recorded below the surface of a finger can have more details and be of higher quality than conventional surface fingerprint images. This is particularly true when the quality of the surface fingerprints is compromised by, for example, moisture or surface damage. However, there is an unmet need for a cost effective fingerprint sensor that could record high-quality images at sufficient depth below the surface and in short-enough time. To ...
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    12. Fingerprint imaging from the inside of a finger with full-field optical coherence tomography

      Fingerprint imaging from the inside of a finger with full-field optical coherence tomography
      Imaging below fingertip surface might be a useful alternative to the traditional fingerprint sensing since the internal finger features are more reliable than the external ones. One of the most promising subsurface imaging technique is optical coherence tomography (OCT), which, however, has to acquire 3-D data even when a single en face image is required. This makes OCT inherently slow for en face imaging and produce unnecessary large data sets ...
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    13. 1-15 of 18 1 2 »
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  2. About Egidijus Auksorius

    Egidijus Auksorius

    Egidijus Auksorius specializes in the development of optical imaging technologies and its applications. Currently, I am working at the Polish Academy of Sciences on developing fast 3-D imaging technologies. I have recently developed a novel fingerprint sensor at Institut Langevin in Paris that is able to image fingerprints from the inside of a finger. Previous to that, I was working in Prof. Gary Tearney's lab at Harvard Medical School on developing high-resolution bioimaging systems. I received my PhD in Physics from Imperial College London for my work on STED microscopy and Fluorescence Lifetime Imaging (FLIM) in Prof. Paul French's lab, which led to the first demonstration of time-resolved STED microscopy.