1. Panomsak Meemon

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    1. Mentioned In 33 Articles

    2. Comparative study of shear wave-based elastography techniques in optical coherence tomography

      Comparative study of shear wave-based elastography techniques in optical coherence tomography
      We compare five optical coherence elastography techniques able to estimate the shear speed of waves generated by one and two sources of excitation. The first two techniques make use of one piezoelectric actuator in order to produce a continuous shear wave propagation or a tone-burst propagation (TBP) of 400 Hz over a gelatin tissue-mimicking phantom. The remaining techniques utilize a second actuator located on the opposite side of the region ...
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    3. Spectral fusing Gabor domain optical coherence microscopy

      Spectral fusing Gabor domain optical coherence microscopy
      Gabor domain optical coherence microscopy (GD-OCM) is one of many variations of optical coherence tomography (OCT) techniques that aims for invariant high resolution across a 3D field of view by utilizing the ability to dynamically refocus the imaging optics in the sample arm. GD-OCM acquires multiple cross-sectional images at different focus positions of the objective lens, and then fuses them to obtain an invariant high-resolution 3D image of the sample ...
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    4. Crawling wave optical coherence elastography

      Crawling wave optical coherence elastography
      Elastography is a technique that measures and maps the local elastic property of biological tissues. Aiming for detection of micron-scale inclusions, various optical elastography, especially optical coherence elastography (OCE), techniques have been investigated over the past decade. The challenges of current optical elastography methods include the decrease in elastographic resolution as compared with its parent imaging resolution, the detection sensitivity and accuracy, and the cost of the overall system. Here ...
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    5. Simultaneous estimation of thickness and refractive index of layered gradient refractive index optics using a hybrid confocal-scan swept-source optical coherence tomography system

      Simultaneous estimation of thickness and refractive index of layered gradient refractive index optics using a hybrid confocal-scan swept-source optical coherence tomography system
      A hybrid confocal-scan swept-source optical coherence tomography metrology system was conceived for simultaneous measurements of the refractive index and thickness profiles of polymeric layered gradient refractive index (GRIN) optics. An uncertainty analysis predicts the metrology capability of the system and guides the selection of an optimum working numerical aperture. Experimental results on both a monolithic and a GRIN layered sheet are demonstrated to be in close agreement with theoretical predictions ...
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    6. Optical Coherence Tomography Enabling Non Destructive Metrology of Layered Polymeric GRIN Material

      Optical Coherence Tomography Enabling Non Destructive Metrology of Layered Polymeric GRIN Material
      Gradient Refractive INdex (GRIN) optical components have historically fallen short of theoretical expectations. A recent breakthrough is the manufacturing of nanolayered spherical GRIN (S-GRIN) polymer optical elements, where the construction method yields refractive index gradients that exceed 0.08. Here we report on the application of optical coherence tomography (OCT), including micron-class axial and lateral resolution advances, as effective, innovative methods for performing nondestructive diagnostic metrology on S-GRIN. We show ...
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    7. Measurement Technique Offers a Way of Improving Optical Lens Making

      Measurement Technique Offers a Way of Improving Optical Lens Making
      Researchers at the University of Rochester have applied a sophisticated imaging technique to obtain the first 3D, high-resolution pictures of a recently developed type of optical lenses. They say that using Optical Coherence Tomography (OCT) during the manufacturing process allows them to significantly improve the quality of these new and promising lenses.
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    8. Optical coherence tomography (OCT) apparatus, methods, and applications

      Optical coherence tomography (OCT) apparatus, methods, and applications
      A free-space Michelson Interferometer-based Dual Detection Frequency Domain-Optical Coherency Tomography (DD-FD-OCT) apparatus includes a non-polarizing beam splitter that can be used to misalign sample and reference beam paths to provide a stable .pi./2 phase shift between simultaneously detected interfering sample and reference beams to eliminate the mirror image created by Fourier transformation during image reconstruction. A hybrid fiber system Mach Zehnder Interferometer- and free-space Michelson Interferometer-based Dual Detection Frequency ...
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    9. Systems and methods for performing Gabor-domain optical coherence microscopy

      Systems and methods for performing Gabor-domain optical coherence microscopy
      In one embodiment, imaging a medium under evaluation includes generating acquired images of the medium, each acquired image comprising a cross-sectional image along a lateral and a depth direction of the medium that results from scanning the medium at a different depths, filtering each acquired image to remove out-of-focus portions of the images and generate filtered images, and merging the filtered images to form a high-resolution fused image.
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    10. Systems and methods for generating a tunable laser beam

      Systems and methods for generating a tunable laser beam
      Systems and methods of generating a tunable laser beam are disclosed. An example method includes: generating coherent optical beams from a plurality of semiconductor optical amplifiers (SOAs); combining the coherent optical beams into a combined coherent optical beam; and tuning the combined beam to a selected frequency range to output a coherent optical beam having only the selected frequency range. In some embodiments, the SOAs are arranged in parallel within ...
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    11. 1-15 of 33 1 2 3 »
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  2. About Panomsak Meemon

    Panomsak Meemon

    Panomsak Meemon is a faculty member at the School of Laser Technology and Photonics, Institute of Science, Suranaree University of Technology (THAILAND). He received his B.Eng in Electrical Engineering from Chiangmai University (THAILAND) in 2000, and M.S. and Ph.D. in Optics from CREOL, the College of Optics and Photonics, University of Central Florida (USA) in 2007 and 2010, respectively. His research topics involve development of optical systems, focusing on Optical Coherence Tomography (OCT), for tissue diagnostics and materials metrology.