1. Christoph M. Eigenwillig

    0 Comments Leave a Comment

    1-15 of 24 1 2 »
    1. Mentioned In 24 Articles

    2. 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 ...
      Read Full Article
    3. 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 ...
      Read Full Article
    4. Wavelength-tunable light source

      Wavelength-tunable light source
      In at least one embodiment of the wavelength-tunable light source, it comprises an output source, which is capable in operation of generating electromagnetic radiation. Furthermore, the light source has a wavelength-selective first filter element, which is situated downstream from the output source. Moreover, the light source contains a first amplifier medium, which is situated downstream from the first filter element and is capable of at least partial amplification of the ...
      Read Full Article
    5. 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 ...
      Read Full Article
    6. 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 ...
      Read Full Article
    7. New rapidly wavelength-swept light sources for optical coherence tomography and picosecond pulse generation. (Thesis)

      New rapidly wavelength-swept light sources for optical coherence tomography and picosecond pulse generation. (Thesis)
      This thesis deals with research on novel, semiconductor-based, ultrafast and widely tunable wavelength-swept light sources with respect to different applications. The main focus was on the young technology of Fourier domain mode locked (FDML) lasers, where the insertion of a kilometer-long fiber delay line enables to tune a narrowband spectral filter synchronously to the roundtrip time of light in the resonator. In this way, very high sweep speeds become feasible ...
      Read Full Article
    8. 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 ...
      Read Full Article
    9. 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 ...
      Read Full Article
    10. 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
      Feature Of The Week 9/5/10: As the 2010 academic years begins OCT News will resume its “Feature Of The Week” section. This year starts with an exciting submission by Dr. Robert Huber’s research group at Ludwig-Maximilians-Universität in Munich on record breaking OCT volumetric data set acquisition rates that were hard to imaging just a few years ago.Currently there is an ongoing debate about the optimum imaging ...
      Read Full Article
    11. 1-15 of 24 1 2 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. About Christoph M. Eigenwillig

    Christoph M. Eigenwillig

    Christoph Eigenwillig is a Member of the BioMolecular Optics Group at the at the Ludwig Maximilian University of Munich.