1. Technical University of Denmark (DTU)

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    1. Mentioned In 100 Articles

    2. High-speed Time-stretch Optical Coherence Tomography (Thesis)

      Explore DTU Research Database Broadband Sources , Student Theses
      High-speed Time-stretch Optical Coherence Tomography (Thesis)
      Supercontinuum sources have great potential in optical coherence tomography due to their ultrabroad spectra, which provide ultrahigh resolution images. High intensity noise of conventional supercontinuum sources, however, has been the limiting factor of widespread adoption, but the emergence of low noise supercontinuum sources promise to change this. In this thesis, both types of supercontinuum sources are tested in a spectrometer-based optical coherence tomography setup, where it is found that the ...
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      Mentions: Technical University of Denmark (DTU)

    3. Postdoc Opening at The Department of Health Technology at the Technical University of Denmark (DTU)

      Explore Optical Coherence Tomography News Jobs & Studentships
      Postdoc Opening at The Department of Health Technology at the Technical University of Denmark (DTU)
      The Postdoc will join the Biophotonic Imaging group at the Department of Health Technology (DTU Health Tech) consisting of ca 10 employees, including several PhD students and postdocs. Within the group, we are working on the advancement of optical imaging technologies for clinical and biological applications. Currently we have research projects on multimodal imaging combining optical coherence tomography, two-photon excitation fluorescence microscopy, lightsheet microscopy, fibre delivery of ultrashort pulses, as ...
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      Mentions: Peter E. Andersen Medical University of Vienna Technical University of Denmark (DTU)

    4. Determination of peripapillary vessel density in optic disc drusen using EDI-OCT and OCT angiography

      Explore ScienceDirect Ophthalmology
      Determination of peripapillary vessel density in optic disc drusen using EDI-OCT and OCT angiography
      Optical coherence tomography angiography (OCTA) is a rapidly developing technique which generates angiographic images non-invasively. This study proposes a method to determine the vessel density in OCTA scans in general and especially the local peripapillary vessel density. The method produces vessel density heatmaps that contain information about the local vessel density. We apply the method in a small study to demonstrate its applicability and its potential to investigate the influence ...
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      Mentions: Technical University of Denmark (DTU)

    5. Chalcogenide-glass polarization-maintaining photonic crystal fiber for mid-infrared supercontinuum generation

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      Chalcogenide-glass polarization-maintaining photonic crystal fiber for mid-infrared supercontinuum generation
      In this paper, we report the design and fabrication of a highly birefringent polarization-maintaining photonic crystal fiber (PM-PCF) made from chalcogenide glass, and its application to linearly-polarized supercontinuum (SC) generation in the mid-infrared region. The fiber was drawn using the casting method from As38Se62 glass which features a transmission window from 2 to 10 m and a high nonlinear index of 1.1310-17 m2 /W. It has a zero-dispersion wavelength ...
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      Mentions: Technical University of Denmark (DTU)

    7. Feature Of The Week 04/28/2019: Real-Time High-Resolution Mid-Infrared OCT

      Explore Optical Coherence Tomography News NDE/NDT
      Feature Of The Week 04/28/2019: Real-Time High-Resolution Mid-Infrared OCT
      The potential for improving the penetration depth of optical coherence tomography systems by using light sources with longer wavelengths has been known since the inception of the technique in the early 1990s. Nevertheless, the development of mid-infrared optical coherence tomography has long been challenged by the maturity and fidelity of optical components in this spectral region, resulting in slow acquisition, low sensitivity, and poor axial resolution. In this work, a ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    9. Supercontinuum noise reduction by fiber undertapering

      Explore OSA | OSA Publishing Broadband Sources
      Supercontinuum noise reduction by fiber undertapering
      We demonstrate that the Relative Intensity Noise (RIN) of a supercontinuum source can be significantly reduced using the new concept of undertapering, where the fiber is tapered to a diameter that is smaller than the diameter that gives the shortest blue edge, which is typically regarded as the optimum. We show that undertapering allows to control the second zero dispersion wavelength and use it as a soliton barrier to stop ...
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      Mentions: Technical University of Denmark (DTU)

    11. Optical Radiomic Signatures Derived from Optical Coherence Tomography Images to Improve Identification of Melanoma

      Explore Cancer Research Oncology , Ophthalmology
      Optical Radiomic Signatures Derived from Optical Coherence Tomography Images to Improve Identification of Melanoma
      The current gold standard for the clinical diagnosis of melanoma is excisional biopsy and histopathologic analysis. Approximately 15-30 benign lesions are biopsied to diagnose each melanoma. Additionally, biopsies are invasive and result in pain, anxiety, scarring and disfigurement of patients which can add an additional burden to the health care system. Among several imaging techniques developed to enhance melanoma diagnosis, optical coherence tomography (OCT), with its high-resolution and intermediate penetration ...
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      Mentions: Peter E. Andersen Technical University of Denmark (DTU)

    13. Noise of supercontinuum sources in spectral domain optical coherence tomography

      Explore OSA | OSA Publishing Broadband Sources
      Noise of supercontinuum sources in spectral domain optical coherence tomography
      In this paper, we investigate the effect of pulse-to-pulse fluctuations of supercontinuum sources on the noise in spectral domain optical coherence tomography (OCT) images. The commonly quoted theoretical expression for the OCT noise is derived for a thermal light source, which is not suitable if a supercontinuum light source is used. We therefore propose a new, measurement-based OCT noise model that predicts the noise without any assumptions on the type ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    14. Real-time high-resolution mid-infrared optical coherence tomography

      Explore Nature Publishing Group
      Real-time high-resolution mid-infrared optical coherence tomography
      The potential for improving the penetration depth of optical coherence tomography systems by using light sources with longer wavelengths has been known since the inception of the technique in the early 1990s. Nevertheless, the development of mid-infrared optical coherence tomography has long been challenged by the maturity and fidelity of optical components in this spectral region, resulting in slow acquisition, low sensitivity, and poor axial resolution. In this work, a ...
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      Mentions: Adrian G. Podoleanu University of Kent Technical University of Denmark (DTU)

    15. Semiconductor Lasers and Diode-based Light Sources for Biophotonics (Textbook)

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      Semiconductor Lasers and Diode-based Light Sources for Biophotonics (Textbook)
      Semiconductor lasers are small, reliable, low cost, high-performance and user-friendly optical devices which make them highly suitable for a variety of biomedical applications. This edited book gathers experts in the field to cover the fundamentals and technology advances of semiconductor lasers and diode-based lasers with a focus on their applications in medical optics and biophotonics including edge-emitting semiconductor lasers and light emitting diodes, Q-switched and mode-locked lasers, quantum cascade lasers ...
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      Mentions: Peter E. Andersen Technical University of Denmark (DTU) Sebastian Marschall

    16. Real‐time High‐Resolution Mid‐infrared Optical Coherence Tomography

      Explore arxiv.org
      Real‐time High‐Resolution Mid‐infrared Optical Coherence Tomography
      The potential for improving the penetration depth of optical coherence tomography systems by using increasingly longer wavelength light sources has been known since the inception of the technique in the early 1990s. Nevertheless, the development of mid‐infrared optical coherence tomography has long been challenged by the maturity and fidelity of optical components in this spectral region, resulting in slow acquisition, low sensitivity, and poor axial resolution. In this work ...
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      Mentions: Adrian G. Podoleanu University of Kent 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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