| 束变换环孔激光谐振腔的环束场传输差分计算 |
| |
| 引用本文： | 刘文广,陆启生,刘泽金. 束变换环孔激光谐振腔的环束场传输差分计算[J]. 强激光与粒子束, 2004, 16(7): 835-839 |
| |
| 作者姓名： | 刘文广 陆启生 刘泽金 |
| |
| 作者单位： | 国防科学技术大学 理学院，湖南 长沙 410073 |
| |
| 基金项目： | 国家863计划项目资助课题 |
| |
| 摘 要： | 通过使用新的坐标变量和光场的表达形式，推导了新坐标系下环束场传输的偏微分方程，给出了相应差分方程的截断误差和稳定性条件，使得环束场传输计算速度大幅提高；使用二阶精度的Crank-Nicolso差分方法对束变换环孔激光谐振腔的环束场传输进行了计算，并与W.D.Murphy和M.L.Bernabe所给M-B积分近似方法的计算结果进行了比较，证实了该方法无论计算速度和精度都优于M-B积分近似方法。
|
| 关 键 词： | 高能激光 束变换环孔腔 环形增益介质 有限差分方法 |
| 文章编号： | 1001-4322(2004)07-0835-05 |
| 收稿时间： | 2003-11-14 |
| 修稿时间： | 2003-11-14 |
Calculation of annular beam propagation in beam-converting annular resonator with a fast finite difference method |
| |
| LIU Wen-guang,LU Qi-sheng,LIU Ze-jin. Calculation of annular beam propagation in beam-converting annular resonator with a fast finite difference method[J]. High Power Laser and Particle Beams, 2004, 16(7): 835-839 |
| |
| Authors: | LIU Wen-guang LU Qi-sheng LIU Ze-jin |
| |
| Affiliation: | Science College, National University of Defence Technology, Changsha 410073, China |
| |
| Abstract: | Beam-converting annular resonator(BCAR) possesses outstanding characteristics of high extraction efficiency and near-diffractive beam quality.But the numerical simulation of BCAR is a hard work,for the thin annular beam propagating calculation will cost much computer work with conventional methods.In this paper a clever finite difference method based on coordinates transform is presented.This method can largely reduce the time for calculating annular beam propagation,it also has higher precision than W.D.Murphy's approximation method does. |
| |
| Keywords: | High energy laser Beam-converting annular resonator Annular gain medium Finite difference method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载免费的PDF全文 |
