1. Marcus Duelk

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    1. Mentioned In 9 Articles

    2. EXALOS to Present Invited Paper on Gallium Nitride-based Superluminescent Light Emitting Diodes (SLEDs) at Photonics West 2018

      EXALOS to Present Invited Paper on Gallium Nitride-based Superluminescent Light Emitting Diodes (SLEDs) at Photonics West 2018
      ...o; and authored by Antonino Castiglia, Marco Rossetti, Marco Malinverni, Christian Mounir, Nicolai Matuschek, Marcus Duelk, and Christian Velez, will be presented by Dr. Antonino Castiglia at 2.00 pm on Thursday, Februar...
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    3. Diagnostics/Optical Coherence Tomography: Light source calibration for accurate depth readings from FD-OCT

      Diagnostics/Optical Coherence Tomography: Light source calibration for accurate depth readings from FD-OCT
      Producing accurate depth information with Fourier-domain optical coherence tomography (FD-OCT) depends on proper light source calibration; there are different considerations for nonlinear sampling in the two primary FD-OCT implementations: spectral-domain (SD-OCT) and swept-source (SS-OCT). Fourier-domain optical coherence tomography (FD-OCT) is a coherence gating technique. It acquires, as a function of optical wavenumber, the interferometric signal generated by mixing backscattered light from the sample with reference light at a fixed group ...
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      Mentions: Exalos Marcus Duelk
    4. Light source, and optical coherence tomography module

      Light source, and optical coherence tomography module
      An optical module includes a light source. The light source can be a swept wavelength light source, and optical module includes a wavemeter. The wavemeter includes a wavemeter tap capable of directing a wavemeter portion of light produced by the light source away from a main beam, a wavelength selective filter arranged to receive the wavemeter portion, a first wavemeter detector arranged to measure a transmitted radiation intensity of radiation ...
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    5. Feature Of The Week 12/1/13: Simultaneous Dual Wavelength Eye-Tracked Ultrahigh Resolution Retinal and Choroidal OCT

      Feature Of The Week 12/1/13: Simultaneous Dual Wavelength Eye-Tracked Ultrahigh Resolution Retinal and Choroidal OCT
      An eye-tracked high resolution OCT device is presented for clinical multimodal imaging of the retina and the deep choroid, based on the platform of a commercial Heidelberg-Engineering SPECTRALIS OCT device. The system is aimed to drive the development of novel therapeutic approaches for better eye care. The dual spectrometer based frequency domain OCT with built-in confocal scanning laser ophthalmoscope (SLO) operating at 735 nm, corrects for eye-motion in real time ...
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    6. Thermal resistance reduction in high power superluminescent diodes by using active multi-mode interferometer

      Thermal resistance reduction in high power superluminescent diodes by using active multi-mode interferometer
      Low thermal resistance of high power superluminescent diodes (SLEDs) by using active multi-mode interferometer (active-MMI) is presented in this paper. The active layer temperature evaluation demonstrates that the power saturation mechanism in active-MMI SLED is heat for the first time. Low thermal resistance of 4.83K/W in active-MMI SLEDs leads to a high power of 115mW. Moreover, the effect of the active area size on the output power is ...
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    7. Light Source, And Optical Coherence Tomography Module (Wo 2010/111795)

      Light Source, And Optical Coherence Tomography Module (Wo 2010/111795)
      According to an aspect of the invention, a swept wavelength light source is provided, the light source comprising: - a semiconductor gain device operable to provide amplification, - an optical retarding device, the retarding device comprising a block of material, a beam path with a well-defined beam path length being defined for light within the block of material produced by the gain device, - a wavelength selector, and - the gain device, the retarding ...
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    8. High Power Blue-Violet Superluminescent Light Emitting Diodes with InGaN Quantum Wells

      High Power Blue-Violet Superluminescent Light Emitting Diodes with InGaN Quantum Wells
      We report on the characteristics of blue superluminescent light emitting diodes based on the emission of InGaN quantum wells. Narrow ridge-waveguide devices realized by standard processing techniques and with extremely low facet reflectivity show single lateral mode emission and continuous-wave output powers 35 mW with a typical spectral bandwidth of 45 nm. Tuning the composition of the active region, superluminescent light emitting diodes spanning all the spectral range between 410 ...
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    9. Isolator-free 840-nm broadband SLEDs for high-resolution OCT

      We have developed ultra-broadband Super-Luminescent Emitting Diodes (SLEDs) at 840 nm with a 3-dB bandwidth of 45-75 nm. The SLEDs show high robustness against back-reflections of up to 50% with little change in coherence length, sidelobe suppression ratio and secondary peak suppression over a wide range of back-reflections. First long-term measurements do not show any signs of device degradation. Hence, these SLEDs can be employed in OCT systems without costly ...
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  2. About Marcus Duelk

    Marcus Duelk is the Chief Technology Officer (CTO) at EXALOS.

  3. Quotes

    1. The collaboration with YellowSys and Agilent Technologies allows us to offer real-time SS-OCT solutions to a wider range of customers...We are focusing on our core competencies to deliver high-performance broadband light sources and optical sub-systems. Customers can purchase state-of-the-art DAQ cards from Agilent for their OCT systems and have the option to upgrade the card to a real-time SS-OCT engine later on. They can also integrate the existing core of the engine into their own real-time processing environment and into their own software platform, if desired.
      In EXALOS and YellowSys team up with Agilent Technologies’ High-Speed Data Acquisition team to offer high-performance real-time swept source OCT engines
    2. The collaboration with YellowSys and Agilent Technologies allows us to offer real-time SS-OCT solutions to a wider range of customers
      In EXALOS and YellowSys team up with Agilent Technologies’ High-Speed Data Acquisition team to offer high-performance real-time swept source OCT engines