1. Technical University of Denmark (DTU)

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    1. Mentioned In 85 Articles

    3. Q-switched based supercontinuum source towards low-cost ultra-high resolution optical coherence tomography

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      Q-switched based supercontinuum source towards low-cost ultra-high resolution optical coherence tomography
      Supercontinuum (SC) light source is certainly one of the best option for ultra-high resolution optical coherence tomography (UHR-OCT). Over the last few years several demonstrations have been done for each commonly used wavelength range [1-2-3]. Nowadays, SC dedicated to UHR-OCT is a mature technology with turn-key commercially available system [4]. The new challenge to answer for SC source is the cost reduction one. In this study, we demonstrate that a ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    4. Two optical coherence tomography systems detect topical gold nanoshells in hair follicles, sweat ducts and measure epidermis

      Explore Wiley Online Library Dermatology
      Two optical coherence tomography systems detect topical gold nanoshells in hair follicles, sweat ducts and measure epidermis
      Optical coherence tomography (OCT) is an optical imaging technology that enables real time, high‐resolution, cross‐sectional and en face investigation of skin by detecting reflected broad‐spectrum near‐infrared light from tissue. OCT provides micron‐scale spatial resolution and millimeter‐scale depth of penetration [1]. Several commercial OCT systems with handheld probes targeted for Dermatology are now available [2].
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    5. In-vivo detection of the skin dermo-epidermal junction by ultrahigh resolution optical coherence tomography

      Explore SPIE Digital Library Dermatology
      In-vivo detection of the skin dermo-epidermal junction by ultrahigh resolution optical coherence tomography
      The human skin is comprised by two layers; epidermis and dermis, separated by the dermo-epidermal junction (DEJ). The relevance of depicting DEJ and measurement of the epidermal thickness (ET) is e.g. seen for superficial skin cancers where delineation of DEJ is of prime prognostic importance. Another example is diagnosis of psoriasis where a thickened epidermis and a ridged DEJ is a hallmark. Histopathological examination of biopsied tissue is traditionally ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    6. All-depth dispersion cancellation in spectral domain optical coherence tomography using numerical intensity correlations

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      All-depth dispersion cancellation in spectral domain optical coherence tomography using numerical intensity correlations
      In ultra-high resolution (UHR-) optical coherence tomography (OCT) group velocity dispersion (GVD) must be corrected for in order to approach the theoretical resolution limit. One approach promises not only compensation, but complete annihilation of even order dispersion effects, and that at all sample depths. This approach has hitherto been demonstrated with an experimentally demanding balanced detection configuration based on using two detectors. We demonstrate intensity correlation (IC) OCT using a ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    7. Special Section Guest Editorial: Commemorating 25 Years of Optical Coherence Tomography: a Perspective on Biomedical Applications

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      Special Section Guest Editorial: Commemorating 25 Years of Optical Coherence Tomography: a Perspective on Biomedical Applications
      ptical coherence tomography (OCT) has become a major medical imaging technology in the time since its inception now more than 25 years ago. During this time, OCT has become very well established in ophthalmology, and this application area largely dominates the field. Next in importance and stage of development is cardiovascular medicine, also a strongly commercial technology, but at an earlier stage and a slower pace of uptake than ophthalmology ...
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      Mentions: Peter E. Andersen David D. Sampson University of Washington

    8. Q-switch-pumped supercontinuum for ultra-high resolution optical coherence tomography

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      Q-switch-pumped supercontinuum for ultra-high resolution optical coherence tomography
      In this Letter, we investigate the possibility of using a commercially availableQ-switch-pumped supercontinuum (QS-SC) source, operating in the kilohertz regime, for ultra-high resolution optical coherence tomography (UHR-OCT) in the 1300nm region. The QS-SC source proves to be more intrinsically stable from pulse to pulse than a mode-locked-based SC (ML-SC) source while, at the same time, is less expensive. However, its pumping rate is lower than that used in ML-SC sources ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    11. Quantitatively Measured Anatomic Location and Volume of Optic Disc Drusen: An Enhanced Depth Imaging Optical Coherence Tomography Study

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      Quantitatively Measured Anatomic Location and Volume of Optic Disc Drusen: An Enhanced Depth Imaging Optical Coherence Tomography Study
      Purpose : Optic disc drusen (ODD) are found in up to 2.4% of the population and are known to cause visual field defects. The purpose of the current study was to investigate how quantitatively estimated volume and anatomic location of ODD influence optic nerve function. Methods : Anatomic location, volume of ODD, and peripapillary retinal nerve fiber layer and macular ganglion cell layer thickness were assessed in 37 ODD patients using ...
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      Mentions: Thomas M. Jørgensen Technical University of Denmark (DTU) University of Copenhagen

    12. A comparative study of noise in supercontinuum light sources for ultra-high resolution optical coherence tomography at 1300 nm

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      A comparative study of noise in supercontinuum light sources for ultra-high resolution optical coherence tomography at 1300 nm
      Supercontinuum (SC) light is a well-established technology, which finds applications in several domains ranging from chemistry to material science and imaging systems [1-2]. More specifically, its ultra-wide optical bandwidth and high average power make it an ideal tool for Optical Coherence Tomography (OCT). Over the last 5 years, numerous examples have demonstrated its high potential [3-4] in this context. However, SC light sources present pulse-to-pulse intensity variation that can limit ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    13. 2nd Canterbury Conference on Optical Coherence Tomography (emphasis on broadband optical sources) September 2017

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      2nd Canterbury Conference on Optical Coherence Tomography (emphasis on broadband optical sources) September 2017
      This 3 day conference will be dedicated to recent advances in measurement and imaging conditioned by progress in enlarging the spectrum of the optical source. The larger the bandwidth of the broadband optical source used in spectrometer based OCT, and of the tuning bandwidth of swept lasers used in swept source OCT, the better the axial resolution. However, an increase in the source bandwidth brings with it other problems that ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    14. Wavelength tunable photon source with sealed inner volume

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      Wavelength tunable photon source with sealed inner volume
      There is presented a method of providing a wavelength tunable photon source (200), comprising bonding a first element (101) with a first mirror (106), a second element (102) with a second mirror (108) and a third element (103) with a photon emitter together in a structure enclosing an inner volume (214) being a sealed volume, and forming a bonding interface (212) which is gas-tight, so that the first mirror (106 ...
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      Mentions: Technical University of Denmark (DTU)

    15. 15 Open PhD Positions within Supercontinuum Light Sources and Applications at Technical University of Denmark

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      15 Open PhD Positions within Supercontinuum Light Sources and Applications at Technical University of Denmark
      We are seeking 15 skilled candidates for PhD positions across Europe in supercontinuum light sources and applications. The candidates should have a background in physics and interest in nonlinear optics, fibre optics and waveguides, and laser physics. SUPUVIR ( SUPercontinuum broadband light sources covering UV to IR applications ) is a new Innovative Training Network (ITN) funded by the European H2020 programme. SUPUVIR will focus on so-called supercontinuum laser sources, which essentially ...
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      Mentions: Technical University of Denmark (DTU)

    16. Wavelength sweepable laser source

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      Wavelength sweepable laser source
      Wavelength sweepable laser source is disclosed, wherein the laser source is a semiconductor laser source adapted for generating laser light at a lasing wavelength. The laser source comprises a substrate, a first reflector, and a second reflector. The first and second reflector together defines an optical cavity, and are arranged to support light oscillation in the optical cavity along an optical path in a direction normal to the substrate. The ...
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      Mentions: Technical University of Denmark (DTU)
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  4. About Technical University of Denmark (DTU)

    Technical University of Denmark (DTU)

    Technical University of Denmark (DTU) was founded in 1829.  The university was merged with the following Danish research centers: Forskningscenter Risø, Danmarks Fødevareforskning, Danmarks Fiskeriundersøgelser; National Institute for Aquatic Resources; Danmarks Rumcenter, and Danmarks Transport-Forskning. DTU Fotonik, Department of Photonics Engineering is a department at the Technical University of Denmark.

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