1. Articles from Hao Liu

    1-4 of 4
    1. All single-mode fiber-based polarization-sensitive spectral domain optical coherence tomography system

      All single-mode fiber-based polarization-sensitive spectral domain optical coherence tomography system

      We reported an all single-mode fiber (SMF)-based polarization sensitive spectral domain optical coherence tomography (PSSDOCT) system with single input polarization state (IPS). In our design, polarization state was modulated only by four polarization controllers (PC) and a polarization beam splitter. To extract the phase retardance and optical axis orientation of sample, the Mueller matrix of the fiber system and sample is transferred to a new retardar by employing PCs with the advantage that the effects of fiber birefringence of SMFs and SMF components are corrected. The contribution of the multibackscattering in tissues to the orthogonal polarization interference signals is ...

      Read Full Article
    2. A miniature endoscopic optical coherence tomography probe based on C-lens

      A miniature endoscopic optical coherence tomography probe based on C-lens

      We present a novel miniature endoscopic OCT probe based on an electrothermal microelectromechanical (MEMS) mirror and a C-lens. The MEMS mirror has a relatively large mirror plate of 0.5 mm×0.5 mm on a small chip size of 1.5 mm×1.3 mm, leading to the outer diameter of the endoscopic probe down to only 2.5 mm so that the probe is capable of being inserted through the biopsy channel of a conventional endoscope. A long focal length of 12 mm is achieved by properly designing the C-lens. Compared to commonly used GRIN lenses, C-lenses have ...

      Read Full Article
    3. Circumferential-scanning endoscopic optical coherence tomography probe based on a circular array of six 2-axis MEMS mirrors

      Circumferential-scanning endoscopic optical coherence tomography probe based on a circular array of six 2-axis MEMS mirrors

      We present a novel circumferential-scan endoscopic optical coherence tomography (OCT) probe by using a circular array of six electrothermal microelectromechanical (MEMS) mirrors and six C-lenses. The MEMS mirrors have a 0.5 mm × 0.5 mm mirror plate and a chip size of 1.5 mm × 1.3 mm. Each MEMS mirror can scan up to 45° at a voltage of less than 12 V. Six of those mirrors have been successfully packaged to a probe head; full circumferential scans have been demonstrated. Furthermore, each scan unit is composed of a MEMS mirror and a C-lens and the six scan ...

      Read Full Article
      Mentions: Huikai K. Xie
    4. Quantitative measurement of subsurface damage with self-referenced spectral domain optical coherence tomography

      Quantitative measurement of subsurface damage with self-referenced spectral domain optical coherence tomography

      In this work, we present the three-dimensional reconstruction of the subsurface damage (SSD) within the optical components at the level of several microns with a self-referenced spectral domain optical coherence tomography (SDOCT) system, from which the quantitative information, including the maximum depth, the cluster depth, the shape, the size and the damage density, can be acquired. First, to compare the actual maximum depths with the ones computed by the formulas for predicting the maximum depth, the theoretical and empirical formulas proposed so far were summarized. The values of the maximum depths of SSD within eight samples were then measured. It ...

      Read Full Article
    1-4 of 4
  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. Topics in the News

    1. (2 articles) Nanjing University of Science and Technology
    2. (1 articles) University of Florida
    3. (1 articles) Tsinghua University
    4. (1 articles) Huikai K. Xie
    5. (1 articles) Wanrong Gao
    6. (1 articles) WiO Technology Limited
  3. Popular Articles

  4. Picture Gallery

    Quantitative measurement of subsurface damage with self-referenced spectral domain optical coherence tomography Circumferential-scanning endoscopic optical coherence tomography probe based on a circular array of six 2-axis MEMS mirrors A miniature endoscopic optical coherence tomography probe based on C-lens All single-mode fiber-based polarization-sensitive spectral domain optical coherence tomography system Remote scanning for ultra-large field of view in wide-field microscopy and full-field OCT Inadequate Intimal Angiogenesis as a Source of Coronary Plaque Instability Comparison of optical coherence tomography angiography results of adult patients with Familial Mediterranean fever and healthy individuals Intravascular ultrasound or optical coherence tomography-defined anatomic severity and hemodynamic severity assessed by coronary physiologic indices Optical coherence tomography in the assessment of cutaneous cancer margins of the face: an immediate ex vivo study Global Analysis of Macular Choriocapillaris Perfusion in Dry Age-Related Macular Degeneration using Swept-Source Optical Coherence Tomography Angiography Reliability of foveal avascular zone metrics automatically measured by Cirrus optical coherence tomography angiography in healthy subjects Duke University Engineering Professor Sina Farsiu Elected Fellow of the IEEE