1. Articles from Ik-Bu Sohn

    1-3 of 3
    1. Laser Processing Apparatus For Monitoring Processing State By Using Optical Coherence Tomography Technology (Wo 2009/096750)

      Laser Processing Apparatus For Monitoring Processing State By Using Optical Coherence Tomography Technology (Wo 2009/096750)

      Disclosed is a laser processing apparatus for monitoring a processing state by using optical coherence tomography technology. The disclosed laser processing apparatus comprises: a processing unit that disrupts the molecular binding of a workpiece by using a femtosecond laser beam; a tomographic monitoring unit that monitors a three-dimensional state of the workpiece; and a controller that controls the output of femtosecond laser beam by using a three-dimensional tomographic image. The laser processing apparatus may further include a surface monitoring unit which monitors a surface state of the workpiece. The laser processing apparatus enables active control over its whole processes since ...

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    2. Single-body lensed photonic crystal fibers as side-viewing probes for optical imaging systems.

      We report the fabrication and performance of a lensed photonic crystal fiber (PCF) designed as a compact but effective side-viewing optical imaging probe. The lensed-PCF probe was implemented in a single body without using any other fibers or additional optics. The beam expansion region and a focusing ball lens, necessary for a focuser, were simultaneously formed along a small piece of PCF by applying arc discharges. The side-viewing ability was provided by polishing the ball lens with a femtosecond laser to form a total internal reflection surface. The working distance and the transverse resolution of the fabricated single-body lensed-PCF were ...
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    3. Single-body lensed photonic crystal fibers as side-viewing probes for optical imaging systems

      We report the fabrication and performance of a lensed photonic crystal fiber (PCF) designed as a compact but effective side-viewing optical imaging probe. The lensed-PCF probe was implemented in a single body without using any other fibers or additional optics. The beam expansion region and a ... [Opt. Lett. 33, 34-36 (2008)]
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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) Gwangju Institute of Science and Technology
    2. (2 articles) Hae Young Choi
    3. (2 articles) Byeong Ha Lee
    4. (2 articles) Jihoon Na
    5. (2 articles) Seon Young Ryu
    6. (2 articles) Massachusetts General Hospital
    7. (1 articles) Tae Joong Eom
    8. (1 articles) Harvard University
    9. (1 articles) The Chinese University of Hong Kong
    10. (1 articles) University of Miami
    11. (1 articles) VU University Amsterdam
    12. (1 articles) David A. Boas
    13. (1 articles) Brett E. Bouma
    14. (1 articles) Johannes F. de Boer
    15. (1 articles) Frank D. Verbraak
    16. (1 articles) Apollo Medical Optics
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