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HWAHAK KONGHAK,
Vol.31, No.5, 493-501, 1993
Vol.31, No.5, 493-501, 1993
광기록매체에서의 열전달 해석
An Analysis of Heat Transfer in Optical Recording Media
가우스분포를 갖는 레이저광이 조사될 때, 광기록매체에서의 열적 특성을 유한요소법을 사용하여 연구하였다. 레이저광이 조사되는 정지된 기록매체에서, power가 증가할수록 또는 필름층의 두께가 감소할수록 기록매체내의 최고온도는 증가했으며, 레이저가 조사되어 100ns 지난 후에 열적 평형상태에 도달함을 알 수 있었다. 또한 일정 선형속도로 움직이는 기록매체에서 눈물방울 형상의 pit가 형성될 수 있음을 예측하였다.
Thermal characteristics of optical reacording media were investigated using the finite element method when a laser beam with a Gaussian distribution was incident on it. For a stationary media, it was found that the maximum temperature increased with increasing laser power and decreasing film thickness. thermal equilibrium state was reached in 100ns after the laser was turned on. In addition, in the reacording media moving with a constant linear velocity, it was possible to predict the formation of teradrop-shaped pit.
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