氟化氘激光大气传输的定标规律
Scaling laws about DF high energy laser propagation in real atmosphere
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摘要: 利用激光大气传输4维程序，结合均方和半径分析方法，对氟化氘（DF）激光大气传输的定标规律进行了数值分析。得到了焦平面处63.2%环围能量半径的光斑扩展规律以及在焦平面上不同环围能量半径内的平均功率密度定标关系式。此定标关系不仅适用于大菲涅耳数、弱传输效应条件下，同时也适用于小菲涅耳数、强传输效应条件下DF高能激光大气传输，从而能够对激光大气传输的效果做出快速地预测和有效地评估。Abstract: The scaling laws about DF high energy laser propagation in real atmosphere are numerically analyzed by the four-dimension code of high energy laser in atmosphere combined with the square root of the sum of squares hypothesis. The scaling relations of the 63.2% encircled energy beam radius spreading and the average energy intensity in different encircled energy radius are obtained in the focal plane. The scaling relations are applicable for DF high energy laser propagation in the condition of different Fresnel numbers and different propagation effects. Based on the relations, the atmospheric propagation effects of high energy laser can be predicted and estimated effectively.
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Key words:
- laser propagation /
- df laser /
- the scaling laws /
- numerical simulation /
- thermal blooming effects
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