1. Articles mentioning both Christoph M. Eigenwillig and Wolfgang Wieser

    1-21 of 21
    1. Dynamical Fabry-Perot tuneable filter device

      Dynamical Fabry-Perot tuneable filter device
      A Fabry-Perot tuneable filter device is described with reflecting elements separated by an optical path length to form an optical resonator cavity. A first actuator means is directly or indirectly coupled with a first reflecting element. And the first actuator means is configured to modulate the optical path length between first and second reflecting elements by a modulation amplitude to thereby sweep the optical resonator cavity through a band of ...
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    2. Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers

      Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers
      Ultrafast lasers have a crucial function in many fields of science; however, up to now, high-energy pulses directly from compact, efficient and low-power semiconductor lasers are not available. Therefore, we introduce a new approach based on temporal compression of the continuous-wave, wavelength-swept output of Fourier domain mode-locked lasers, where a narrowband optical filter is tuned synchronously to the round-trip time of light in a kilometre-long laser cavity. So far, these ...
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    3. High-speed polarization sensitive optical coherence tomography scan engine based on Fourier domain mode locked laser

      High-speed polarization sensitive optical coherence tomography scan engine based on Fourier domain mode locked laser
      We report on a new swept source polarization sensitive optical coherence tomography scan engine that is based on polarization maintaining (PM) fiber technology. The light source is a Fourier domain mode locked laser with a PM cavity that operates in the 1300 nm wavelength regime. It is equipped with a PM buffer stage that doubles the fundamental sweep frequency of 54.5 kHz. The fiberization allows coupling of the scan ...
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    4. Extended coherence length megahertz FDML and its application for anterior segment imaging

      Extended coherence length megahertz FDML and its application for anterior segment imaging
      We present a 1300 nm Fourier domain mode locked (FDML) laser for optical coherence tomography (OCT) that combines both, a high 1.6 MHz wavelength sweep rate and an ultra-long instantaneous coherence length for rapid volumetric deep field imaging. By reducing the dispersion in the fiber delay line of the FDML laser, the instantaneous coherence length and hence the available imaging range is approximately quadrupled compared to previously published MHz-FDML ...
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    5. Multi-MHz FDML OCT: snapshot retinal imaging at 6.7 million axial-scans per second

      Multi-MHz FDML OCT: snapshot retinal imaging at 6.7 million axial-scans per second
      We demonstrate the acquisition of densely sampled wide-field 3D OCT datasets of the human retina in 0.3s. This performance is achieved with a multi-MHz Fourier domain mode-locked (FDML) laser source operating at 1050nm. A two-beam setup doubles the 3.35MHz laser sweep rate to 6.7MHz, which is 16x faster than results achieved with any non-FDML source used for retinal OCT. We discuss two main benefits of these high ...
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    6. Feature Of The Week 9/4/11: Researchers at Ludwig-Maximilians University Continue to Blaze Trails Developing High Performance Swept Source OCT Technology and Its Application in Medical Imaging

      Feature Of The Week 9/4/11: Researchers at Ludwig-Maximilians University Continue to Blaze Trails Developing High Performance Swept Source OCT Technology and Its Application in Medical Imaging
      Researchers at Ludwig-Maximilians University continue to blaze trails in their work developing high performance swept source optical coherence tomography technology and the application of high speed frequency tuned sources in medical imaging. The Fourier-domain mode locked laser (FDML) together with tapped-delay line sweep-rate multipliers, light delivery and calibration optics, novel frame averaging and sampling techniques, wide FOV scanning technology, and high speed signal processing and visualization technology are impressive and ...
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    7. Feature Of The Week 9/5/10: Record Breaking OCT Volumetric Image Acquisition Rates by Researchers at Ludwig Maximilians University

      Feature Of The Week 9/5/10: Record Breaking OCT Volumetric Image Acquisition Rates by Researchers at Ludwig Maximilians University
      ...to achieve record-breaking OCT A-scan rates of up to 20.8MHz with good image quality.As recently published by Wolfgang Wieser, Benjamin Biedermann, Thomas Klein, Christoph Eigenwillig, and Robert Huber, their system has ...
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    8. Feature Of The Week 12/6/09: Cascaded Wavelength Swept Amplified Spontaneous Emission Source for Optical Coherence Tomography

      Feature Of The Week 12/6/09: Cascaded Wavelength Swept Amplified Spontaneous Emission Source for Optical Coherence Tomography
      ...increased loss in the long fiber can complicate FDML operation. Christoph Eigenwillig, Benjamin Biedermann, Wolfgang Wieser and Robert Huber recently present an alternative approach to realize high speed swept source O...
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    9. Recent developments in Fourier Domain Mode Locked lasers for optical coherence tomography: Imaging at 1310 nm vs. 1550 nm wavelength

      We report on recent progress in Fourier domain mode-locking (FDML) technology. The paper focuses on developments beyond pushing the speed of these laser sources. After an overview of improvements to FDML over the last three years, a brief analysis of OCT imaging using FDML lasers with different wavelengths is presented. For the first time, high speed, high quality FDML imaging at 1550 nm is presented and compared to a system ...
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    10. Real time en face Fourier-domain optical coherence tomography with direct hardware frequency demodulation

      ...0.4500) Medical optics and biotechnology : Optical coherence tomography Citation B. R. Biedermann, W. Wieser, C. M. Eigenwillig, G. Palte, D. C. Adler, V. J. Srinivasan, J. G. Fujimoto, and R. Huber, "Real time en face F...
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    11. 1-21 of 21
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  2. Organizations in the News

    1. (19 articles) Ludwig Maximilian University of Munich
    2. (2 articles) Medical University of Vienna
    3. (2 articles) Ludwig-Maximilians University
    4. (1 articles) University of Vienna
    5. (1 articles) Massachusetts Institute of Technology
  3. People in the News

    1. (20 articles) Robert A. Huber
    2. (18 articles) Benjamin R. Biedermann
    3. (12 articles) Thomas Klein
    4. (2 articles) Desmond C. Adler
    5. (2 articles) Raphael André
    6. (2 articles) Rainer A. Leitgeb
    7. (2 articles) Cedric Blatter
    8. (2 articles) Branislav Grajciar
    9. (1 articles) Vivek J. Srinivasan
    10. (1 articles) Michael Pircher
    11. (1 articles) Marco Bonesi
    12. (1 articles) James G. Fujimoto
  4. OCT Companies in the News

    1. (1 articles) Abbot