1. Articles from M. Ueno

    1-2 of 2
    1. Three-dimensional high-speed optical coherence tomography system using KTN swept light source

      Three-dimensional high-speed optical coherence tomography system using KTN swept light source

      Three-dimensional (3D) optical coherence tomography (3D-OCT) has attracted attention for visualising complex structures in the biomedical field. In this reported work, a high-speed 3D-OCT system is developed, which is based on a high-speed swept light source and aMach-Zehnder interferometer with a high-speed photodetector. The light source, incorporating a KTa 1-x Nb x O 3 electro-optic deflector, operates at a repetition rate of 200 kHz and enables high-speed data acquisition. As a preliminary study, images of a strawberry's surface have been obtained, two- and three-dimensionally. The 3D-OCT system has potential for the construction of a four-dimensional OCT image to dynamically ...

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    2. 200 kHz swept light source equipped with KTN deflector for optical coherence tomography

      200 kHz swept light source equipped with KTN deflector for optical coherence tomography

      A new light source for swept-source optical coherence tomography (SSOCT) is presented, namely, an external-cavity LD equipped with a KTN electro-optic deflector. The KTN deflector is unique in being very fast and simultaneously providing an appreciable deflection caused by injected carriers.Being free frommechanical resonance, the 1.3 μm laser exhibits a scanning range of almost 80 nm up to 200 kHz with a + 400 V deflector driving voltage. Preliminary SS-OCT images of a human fingernail and finger skin have been obtained using the swept light source.

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      Mentions: NTT Kazuo Fujiura
    1-2 of 2
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    1. (2 articles) NTT
    2. (1 articles) Osaka University
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