1. Articles mentioning both Nagoya University and Osaka University

    1-11 of 11
    1. 0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography

      0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography
      Quantum information technologies harness the intrinsic nature of quantum theory to beat the limitations of the classical methods for information processing and communication. Recently, the application of quantum features to metrology has attracted much attention. Quantum optical coherence tomography (QOCT), which utilizes two-photon interference between entangled photon pairs, is a promising approach to overcome the problem with optical coherence tomography (OCT): As the resolution of OCT becomes higher, degradation of ...
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    2. Dispersion cancellation in high-resolution two-photon interference

      Dispersion cancellation in high-resolution two-photon interference
      The dispersion cancellation observed in Hong-Ou-Mandel (HOM) interference between frequency-entangled photon pairs has been the basis of quantum optical coherence tomography and quantum clock synchronization. Here we explore the effect of phase dispersion on ultranarrow HOM dips. We show that the higher-order dispersion, the linewidth of the pump laser, and the spectral shape of the parametric fluorescence have a strong effect on the dispersion cancellation in the high-resolution regime with ...
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    3. Feature Of The Week 4/8/12: Researchers at Osaka and Nagoya University Investigate The Use of Ultrahigh Resolution OCT for Imaging Protein Crystals

      Feature Of The Week 4/8/12: Researchers at Osaka and Nagoya University Investigate The Use of Ultrahigh Resolution OCT for Imaging Protein Crystals
      technique used for atomic-resolution protein-structure studies, and currently, robotic automation is often used to monitor and optimize crystallization conditions. However, it is often difficult to identify, by conventional light microscopy, crystals that can be used for X-ray crystallography when micro-size, needle, and salt crystals are also present in the crystallization medium.For the work reported herein, we demonstrated that micro-scale, non-invasive, three-dimensional (3D) cross-sectional, μm-resolution imaging of protein crystals could ...
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    4. Three-dimensional, non-invasive, cross-sectional imaging of protein crystals using ultrahigh resolution optical coherence tomography

      Three-dimensional, non-invasive, cross-sectional imaging of protein crystals using ultrahigh resolution optical coherence tomography
      Micro-scale, non-invasive, three-dimensional cross-sectional imaging of protein crystals was successfully accomplished using ultra-high resolution optical coherence tomography (UHR-OCT) with low noise, Gaussian like supercontinuum. This technique facilitated visualization of protein crystals even those in medium that also contained substantial amounts of precipitates. We found the enhancement of the scattered signal from protein crystal by inclusion of agarose gel in the crystallization medium. Crystals of a protein and a salt in ...
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    5. Generation of broadband spontaneous parametric fluorescence and its application to quantum optical coherence tomography

      Generation of broadband spontaneous parametric fluorescence and its application to quantum optical coherence tomography
      Optical coherence tomography (OCT) based on Michelson interferometer has widely been utilized in biology and medicine as a type of optical biopsy and quantum optical coherence tomography (QOCT) based on Hong-Ou-Mandel interferometer has recently been demonstrated. By use of quantum entangled photon pairs generated via spontaneous parametric down conversion (SPDC) process, axial resolution of QOCT can be better than that of OCT in principle for a source of same bandwidth ...
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    6. Ultrahigh-Resolution Optical Coherence Tomography in 1.7 µm Region with Fiber Laser Supercontinuum in Low-Water-Absorption Samples

      Ultrahigh-Resolution Optical Coherence Tomography in 1.7 µm Region with Fiber Laser Supercontinuum in Low-Water-Absorption Samples
      ... Computer Science, Nagoya University, Nagoya 464-8603, Japan 1Division of Advanced Science and Biotechnology, Osaka University, Suita, Osaka 565-0871, Japan Ultrahigh-resolution, high-penetration-depth optical coherence ...
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    7. Ex-vivo ultra-high-resolution optical coherence tomography imaging of fine lung structure by use of a high-power Gaussian-like supercontinuum at 0.8-μm wavelength

      Ex-vivo ultra-high-resolution optical coherence tomography imaging of fine lung structure by use of a high-power Gaussian-like supercontinuum at 0.8-μm wavelength
      Optical coherence tomography (OCT) is an emerging technology for non-invasive cross-sectional imaging of biological tissue and material with um resolution. Recently, non-invasive high resolution cross-sectional imaging is desired for investigation of diseases in lung in the field of pulmonary medicine. So far, a few works have been reported about OCT imaging of lung. Since the lung consists of alveoli separated by thin wall, ultrahigh resolution (UHR) OCT is supposed to ...
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    8. Ultrahigh resolution optical coherence tomography imaging of lung structure using Gaussian shaped super continuum sources

      Ultrahigh resolution optical coherence tomography imaging of lung structure using Gaussian shaped super continuum sources
      Optical coherence tomography (OCT) is an emerging technology for non-invasive cross-sectional imaging of biological tissue and material with um resolution. In the field of pulmonary medicine, non-invasive high resolution cross-sectional imaging is desired for investigation of diseases in lung. So far, a few works have been reported about OCT imaging of lung. Since the lung consists of alveoli separated by thin wall, ultrahigh resolution (UHR) OCT is supposed to be ...
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    9. Dimension measuring apparatus

      Dimension measuring apparatus
      A dimension measuring apparatus includes a light beam splitting element for splitting light emitted from a white light source into measuring light flux and reference light flux, a reference light scanning optics for varying optical path length of the reference light flux, a detector for detecting interference signal produced by the light fluxes, and a controller for determining the surface height of the object from the optical path length of ...
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    10. Quasi-supercontinuum generation using 1.06μmultrashort-pulse laser system for ultrahigh-resolution optical-coherence tomography

      Quasi-supercontinuum generation using 1.06μmultrashort-pulse laser system for ultrahigh-resolution optical-coherence tomography
      We demonstrate quasi-supercontinuum (quasi-SC) generation around the 1.3 μm wavelength region using ultrahigh-speed, wavelength-tunable, femtosecond soliton pulses based on an ultrashort-pulse laser system operating at a wavelength of 1.0μm. The wavelength tuning range was from 1.0 to 1.9μm, and the scanning speed was up to 1.3MHz. A Gaussian-like quasi-SC with a bandwidth of 220nm was generated at 1220nm. The generated quasi-SC was used in an ...
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  2. Organizations in the News

    1. (1 articles) Kyoto University Graduate School of Medicine
  3. People in the News

    1. (11 articles) Norihiko Nishizawa
    2. (2 articles) Hiroyoshi Matsumura
    3. (1 articles) Atsushi Tanaka
  4. OCT Companies in the News

    1. (1 articles) Nidek