物理学报2012，Vol.61Issue(16)：242-248,7.
形状与位置对断点划痕场分布的影响研究
The effects of shape and position on field distribution of discontinuous crack
摘要
Abstract
Elliptic paraboloid model is established, and three-dimensional finite-difference time-domain method has been employed to sim- ulate the field distribution of discontinuous crack with different shapes and positions in fused silica output subsurface under 355 nm laser incidence. Results show that both electric field intensity and the number of enhanced points （with ｜E｜ ≥ 2.0 V/m） follow a trend of first increasing and then decreasing with the increase of collinear axis length of ellipsoid. The light intensity enhancement factor reaches a maximal value when the axial ratio is 1.1 to 1.2. If parallel collinear axis length of ellipsoid increases, the electric field intensity first increases gradually, and then becomes stable when the axial ratio is 0.53. At the same time, the number of enhanced points grows rapidly.关键词
熔石英/断点划痕/激光辐照/时域有限差分Key words
fused silica/discontinuous crack/laser irradiation/finite-difference time-domain分类
信息技术与安全科学引用本文复制引用
章春来,刘春明,向霞,王治国,李莉,袁晓东,贺少勃,祖小涛..形状与位置对断点划痕场分布的影响研究[J].物理学报,2012,61(16):242-248,7.基金项目
国家自然科学基金青年科学基金（批准号：10904008）、国家自然科学基金委员会一中国工程物理研究院联合基金（批准号：11076008）和中央高校基本科研业务费（批准号：ZYGX2009X007,ZYGX2010J045,ZYGX2011J043）资助的课题. （）
