摘要
修正了激光辐照下金属材料复合气化汽离混合区对激光的吸收系数,导出了汽离混合区激光强度的时空分布关系,分析了汽离混合区的吸收系数和激光强度与关联参数的牵联机制,结果发现:(1)汽离混合区的吸收系数和激光约化强度虽然较小,但随时间分别成正弦和余弦规律分布。(2)在汽离混合区,随着入射激光波长的增加,各处的吸收系数和约化强度分别按周期性指数规律增加和减少,不同时间点的吸收规律类似,但变化周期不同。(3)汽离混合区吸收系数随着位置坐标的增加而增加,且增加规律为指数规律;激光约化强度随着位置坐标的增加而加速减少。
The absorption coefficient of steam - ion mix area have revised about laser irradiation to take off metal material compound gasification, The space - time distribution relation of laser strength have given in steam - ion mix area. Connection machinemade of absorption coefficient and laser strength with relation parameter in steam - ion mix area have been analysed. Discover as a result：（ 1 ） though the absorption coefficient and laser brief strength is less in steam - ion mix area. But at any time between differentiate sine and cosine law to distribution. （ 2 ） Absorption coefficient and brief strength press periodicity index law respectively increase and decrease, with the increase of the incident laser wavelength in intermediate point of steamion mix area. Absorption law is identical for not at the same time in steam - ion mix area, but it＇s oeriod is not same. （3） Absorption coefficient increases along with the increase of location coordinate in the area that steam and ion mix,and it is index law to increase;laser brief strength decreasing along with the increase of location coordinate in steam - ion mix area.
出处
《激光杂志》
CAS
CSCD
北大核心
2007年第4期62-63,65,共3页
Laser Journal
基金
重庆市教委自然科学基金资助[批准号:KJ061308]
关键词
激光辐照
时空分布
汽离混合区
吸收系数
约化强度
laser irradiation
space - time distribution
steam 2 ion mix area
absorption coefficient
brief strength
