대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

레이저 융제된 HTS 표면의 불균일한 변조에 대한 연구

Study on the nonuniform modification of laser ablated HTS surface

  • 정영식 (연세대학교 전기공학과) ;
  • 이상렬 (연세대학교 전기공학과)
  • Jeong, Young-Sik (Department of Electrical Engineering, Yonsei University) ;
  • Lee, Sang-Yeol (Department of Electrical Engineering, Yonsei University)
  • 발행 : 1996.11.16
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초록

High temperature superconducting (HTS) target has been irradiated by excimer laser beam. The surface of HTS target has been changed and showed the formation of cones. The laser ablated HTS target surface has been systematically studied using a scanning electron microscope. A KrF excimer laser with a wavelength of 248 nm was used to ablate the HTS YBCO target. The size of laser beam focused on the target showed a rectangular shape of $9.7{\times}2\;mm^2$. The image of SEM shows the difference between the shapes of cones fanned at the boundary and at the center of the ablated area after 1,000 laser pulses.

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