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논문 기본 정보

자료유형
학술저널
저자정보
Yoon, Ji Wook (Department of Nano-Mechatronics, University of Science and Technology [UST] Nano Machining Laboratory, Korea Institute of Machinery and Materials [KIMM]) Choi, Won Suk (Department of Nano-Mechatronics, University of Science and Technology [UST] Nano Machining Laboratory, Korea Institute of Machinery and Materials [KIMM]) Kim, Hoon Young (Department of Nano-Mechatronics, University of Science and Technology [UST] Nano Machining Laboratory, Korea Institute of Machinery and Materials [KIMM]) Cho, Sung-Hak (Department of Nano-Mechatronics, University of Science and Technology [UST] Nano Machining Laboratory, Korea Institute of Machinery and Materials [KIMM])
저널정보
한국레이저가공학회 한국레이저가공학회지 한국레이저가공학회지 제17권 제2호
발행연도
2014.1
수록면
19 - 25 (7page)

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Optical embedded diffraction gratings with the bulk modification in BK-7 glass plates excited by tightly focused high-intensity femtosecond (130fs) Ti: sapphire laser (peak wavelength = 790nm) were demonstrated. The structural modifications with diameters ranging from 400nm to $4{\mu}m$ were photo-induced after plasma formation occurred upon irradiation with peak intensities of more than $1{\times}1013W/cm^2$. The graded refractive index profile was fabricated to be a symmetric around from the center of the point at which low-density plasma occurred. The maximum refractive index change was estimated to be $1.5{\times}10^{-2}$. The two optical embedded gratings in BK-7 glass plate were demonstrated with refractive index modification induced by the scanning of low-density plasma formation.

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