1. Optores

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    1. Mentioned In 20 Articles

    2. Towards phase-stabilized Fourier domain mode-locked frequency combs

      Explore Nature Publishing Group Tunable Sources
      Towards phase-stabilized Fourier domain mode-locked frequency combs
      Fourier domain mode-locked (FDML) lasers are some of the fastest wavelength-swept light sources, and used in many applications like optical coherence tomography (OCT), OCT endoscopy, Raman microscopy, light detection and ranging, and two-photon microscopy. For a deeper understanding of the underlying laser physics, it is crucial to investigate the light field evolution of the FDML laser and to clarify whether the FDML laser provides a frequency comb structure. In this ...
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      Mentions: University of Lübeck Technical University of Munich Optores

    3. Method for monitoring time-dependent properties of light during scanning swept-source optical coherence tomography

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      Method for monitoring time-dependent properties of light during scanning swept-source optical coherence tomography
      A method comprises: splitting laser light into sample light, reference light, and monitor light; routing the reference light into a reference arm of an OCT interferometer; routing the monitor light into a monitor device, which generates at least one optical monitor signal representing at least one time-dependent property of the monitor light; generating at least one electric monitor signal from the at least one optical monitor signal; illuminating in a ...
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      Mentions: Optores

    4. Monitoring dissolution of a dosage form in progress during dissolution by low coherence interferometry

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      Monitoring dissolution of a dosage form in progress during dissolution by low coherence interferometry
      A method of monitoring a property of a dissolution of an at least partially solid dosage form during a dissolution process is disclosed. The method includes at least partially dissolving the dosage form, and during the dissolution of the dosage form, simultaneously monitoring the property of the dissolution of the dosage form in progress by low coherence interferometry.
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      Mentions: Corning Optores

    5. Method for preserving the synchronism of a Fourier Domain Mode Locked (FDML) laser

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      Method for preserving the synchronism of a Fourier Domain Mode Locked (FDML) laser
      The invention relates to a method for maintaining the synchronism of a Fourier Domain Mode Locked (FDML) laser, the FDML laser comprising at least one dispersion-compensated resonator with at least one variably wavelength-selective optical filter, the laser light circulating in the resonator at a circulation frequency, and the wavelength selectivity of the filter being repeatedly modified at a syntonising rate, the FDML laser being synchronous when the syntonising rate is ...
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      Mentions: Optores

    6. Flexible A-scan rate MHz-OCT: efficient computational downscaling by coherent averaging

      Explore OSA | OSA Publishing Tunable Sources
      Flexible A-scan rate MHz-OCT: efficient computational downscaling by coherent averaging
      In order to realize adjustable A-scan rates of fast optical coherence tomography (OCT) systems, we investigate averaging of OCT image data acquired with a MHz-OCT system based on a Fourier Domain Mode Locked (FDML) laser. Increased system sensitivity and image quality can be achieved with the same system at the cost of lower imaging speed. Effectively, the A-scan rate can be reduced in software by a freely selectable factor. We ...
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      Mentions: University of Lübeck Optores

    7. Simultaneous morphological and flow imaging enabled by megahertz intravascular Doppler optical coherence tomography

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      Simultaneous morphological and flow imaging enabled by megahertz intravascular Doppler optical coherence tomography
      We demonstrate three-dimensional intravascular flow imaging compatible with routine clinical image acquisition workflow by means of megahertz (MHz) intravascular Doppler Optical Coherence Tomography (OCT). The OCT system relies on a 1.1 mm diameter motorized imaging catheter and a 1.5 MHz Fourier Domain Mode Locked (FDML) laser. Using a post processing method to compensate the drift of the FDML laser output, we can resolve the Doppler phase shift between ...
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      Mentions: University of Lübeck Erasmus University Optores

    8. Functional retinal imaging using adaptive optics swept-source OCT at 1.6  MHz

      Explore OSA | OSA Publishing
      Functional retinal imaging using adaptive optics swept-source OCT at 1.6  MHz
      Objective optical assessment of photoreceptor function may permit earlier diagnosis of retinal disease than current methods such as perimetry, electrophysiology, and clinical imaging. In this work, we describe an adaptive optics (AO) optical coherence tomography (OCT) system designed to measure functional responses of single cones to visible stimuli. The OCT subsystem consisted of a raster-scanning Fourier-domain mode-locked laser that acquires A scans at 1.64 MHz with a center wavelength ...
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      Mentions: UCSD Optores

    10. Ultra low noise Fourier domain mode locked laser for high quality megahertz optical coherence tomography

      Explore OSA | OSA Publishing Tunable Sources
      Ultra low noise Fourier domain mode locked laser for high quality megahertz optical coherence tomography
      We investigate the origin of high frequency noise in Fourier domain mode locked (FDML) lasers and present an extremely well dispersion compensated setup which virtually eliminates intensity noise and dramatically improves coherence properties. We show optical coherence tomography (OCT) imaging at 3.2 MHz A-scan rate and demonstrate the positive impact of the described improvements on the image quality. Especially in highly scattering samples, at specular reflections and for strong ...
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      Mentions: University of Lübeck Technical University of Munich Optores

    11. Feature Of The Week 09/10/2017: Thermo-elastic Optical Coherence Tomography

      Explore Optical Coherence Tomography News
      Feature Of The Week 09/10/2017: Thermo-elastic Optical Coherence Tomography
      The conventional OCT image contrast is derived from elastic scattering, and shows the internal structure of the sample. The determination of the tissue type in OCT images usually depends on the interpretation by the image reader. More accurate tissue type contrast may be achieved by new OCT-based imaging modalities, with sensitivity to other physical parameters than scattering alone. Phase-sensitive OCT can detect tissue motion on nanometer-to- micrometer length scales using ...
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      Mentions: Delft University of Technology Chinese Academy of Sciences University of Lübeck

    12. Thermo-elastic optical coherence tomography

      Explore OSA | OSA Publishing
      Thermo-elastic optical coherence tomography
      The absorption of nanosecond laser pulses induces rapid thermo-elastic deformation in tissue. A sub-micrometer scale displacement occurs within a few microseconds after the pulse arrival. In this Letter, we investigate the laser-induced thermo-elastic deformation using a 1.5 MHz phase-sensitive optical coherence tomography (OCT) system. A displacement image can be reconstructed, which enables a new modality of phase-sensitive OCT, called thermo-elastic OCT. An analysis of the results shows that the ...
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      Mentions: Delft University of Technology Chinese Academy of Sciences University of Lübeck

    13. INTRAPAPILLARY PROLIFERATION IN OPTIC DISK PITS: Clinical Findings and Time-Related Changes

      Explore LWW Online Ophthalmology
      INTRAPAPILLARY PROLIFERATION IN OPTIC DISK PITS: Clinical Findings and Time-Related Changes
      Purpose: To investigate the structural changes of intrapapillary proliferations associated with optic disk pits (ODPs) and optic disk pit maculopathy (ODP-M) using enhanced depth-spectral domain-optical coherence tomography (SD-EDI-OCT) and megahertz optical coherence tomography (MHz-OCT). Methods: Sixteen eyes of patients with ODPs were studied. Papillary and peripapillary areas were repeatedly examined with SD-EDI-OCT over time. To evaluate swept-source OCT, some of the patients additionally received MHz-OCT-imaging. Results: MHz-OCT or SD-EDI images ...
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      Mentions: University of Lübeck Optores

    14. Analysis of FDML lasers with meter range coherence

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      Analysis of FDML lasers with meter range coherence
      FDML lasers provide sweep rates in the MHz range at wide optical bandwidths, making them ideal sources for high speed OCT. Recently, at lower speed, ultralong-range swept-source OCT has been demonstrated using a tunable vertical cavity surface emitting laser (VCSEL) and also using a Vernier-tunable laser. These sources provide relatively high sweep rates and meter range coherence lengths. In order to achieve similar coherence, we developed an extremely well dispersion ...
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      Mentions: University of Lübeck Optores

    15. Imaging of the human choroid with a 1.7 MHz A-scan rate FDML swept source OCT system

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      Imaging of the human choroid with a 1.7 MHz A-scan rate FDML swept source OCT system
      We demonstrate OCT angiography (OCTA) and Doppler OCT imaging of the choroid in the eyes of two healthy volunteers and in a geographic atrophy case. We show that visualization of specific choroidal layers requires selection of appropriate OCTA methods. We investigate how imaging speed, B-scan averaging and scanning density influence visualization of various choroidal vessels. We introduce spatial power spectrum analysis of OCT en face angiographic projections as a method ...
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      Mentions: UC Davis Optores

    16. Beyond Better Clinical Care: Optical Coherence Tomography's Economic Impact

      Explore BioOptics World
      Beyond Better Clinical Care: Optical Coherence Tomography's Economic Impact
      The optical coherence tomography (OCT) industry has grown dramatically in its first 25 years, and while the positive effects on patient clinical care are the most important measure of OCT's success, its contributions to the economy in jobs, tax receipts, and healthcare savings are also noteworthy. The field of optical coherence tomography (OCT) has grown dramatically since its discovery in the early 1990s. The commercialization and growth of OCT ...
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      Mentions: Tomophase Corporation Heliotis AG Imalux
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  4. About Optores

    Optores

    Optores introduces the worlds first swept laser source with a sweep rate of up to 1.5 MHz for tomorrow's optical coherence tomography systems. The Optores swept source is based on all-fiber Fourier-domain mode-locked (FDML) laser technology. Designed for record speed, the Optores swept laser also features long coherence lengths and very high output powers beyond 80 mW. Three configuration variants are available to match your requirements.

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