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레이저의 피부 흡수에 의해 발생하는 축 방향 변위의 펄스 폭 의존성에 관한 연구
양승진 ( Seungjin Yang ),백준혁 ( Junhyeok Baek ),김재영 ( Jaeyoung Kim ),장경민 ( Kyungmin Jang ),박종락 ( Jongrak Park ) 조선대학교 공학기술연구원 2015 공학기술논문지 Vol.8 No.3
In this study, simulations of the axial displacement generated in human tissues by pulsed laser absorption were executed. The temporal width of the laser pulse was varied from 1 ns to 1000 ns, while the pulse energy and the beam diameter were set to 9.6 mJ and 0.5 mm, respectively. It was found that the magnitude of the axial displacement decreased as the laser pulse width increased. When the laser pulse width was ~500 ns, the magnitude of the axial displacement dropped to half of that for the 1-ns pulse width. The magnitude of the axial stress was also examined and found to be rapidly reduced with the increase of the laser pulse width.