物理学报2011，Vol.60Issue(11)：325-331,7.
高功率激光系统中随机分布缺陷产生的“热像”
Hot-images induced by the random distribution defects in high power laser systems
摘要
Abstract
Based on the diffraction theory model of hot-images,the formation mechanism of the hot-images induced by the defects with random size and position distribution in a high power laser system is theoretically investigated by using the propagation matrix of the spatial spectrum.For the comparison with the theoretical results,the evolution of the hot-images induced by defects with random distribution is also numerically investigated.Furthermore,the relationship describing the tendency of the hot-image intensity with the number or size range of the defects is analyzed by employing statistical theory.The results show that the hot-image intensity will reach a maximum if the size of the corresponding defect approaches a specific value,and that there exists a corresponding relation between the transverse position of the hot-image point with the maximum intensity and the defect distribution.It is also found that the intensity of the hot-image has an upward trend with both the size range and the number of defects within a certain scope increasing.However,the tendency will be steady when the probability of the defects with the most risk of damage size reaches a certain value.Such results maybe provide a guidance for improving cleanliness of the optical components.关键词
热像/随机分布缺陷/高功率激光/非线性介质Key words
hot-image/random distribution defects/high power laser/nonlinear medium分类
数理科学引用本文复制引用
蔡朝斌,赵建林,彭涛,李东..高功率激光系统中随机分布缺陷产生的“热像”[J].物理学报,2011,60(11):325-331,7.基金项目
国家自然科学基金委员会与中国工程物理研究院联合基金（批准号：10576023）资助的课题 （）
