| 高功率高效率三次谐波二维数值模拟研究 |
| |
| 引用本文： | 马驰,何钰娟,魏晓峰,袁静,骆永全,王建军,粟敬钦.高功率高效率三次谐波二维数值模拟研究[J].强激光与粒子束,2000,12(8). |
| |
| 作者姓名： | 马驰 何钰娟 魏晓峰 袁静 骆永全 王建军 粟敬钦 |
| |
| 作者单位： | 中国工程物理研究院 高温高密度等离子体物理国家重点实验室， 四川 绵阳919-988信箱 621900；2. 四川大学 光电系, 四川 成都 610054 |
| |
| 摘 要： | 对大口径、高功率情况下的三次谐波转换，选择KDP晶体TypeⅠ/TypeⅡ匹配角度失谐的三倍频方案，并从非线性三波耦合方程组出发，采用离散傅立叶变换和四阶龙格库塔(R-K)积分方法，编制了二维模拟三次谐波转换的计算程序。计算了各种晶体厚度和不同失谐角条件下，二、三次谐波的转换特性和效率。并对入射基频光为六阶超高斯分布时的三倍频器进行了优化，三倍频转换效率达80%，此时具有较大的动态范围和较高的三倍频转换效率。
|
| 关 键 词： | 三次谐波转换 数值模拟 非线性晶体 |
| 收稿时间： | 1900-01-01; |
Two dimension numerical simulation study on high power high efficiency tripling harmonic |
| |
| ma chi,he yu-juan,wei xiao-feng,yuan jing,luo yong-quan,wang jian-jun,su jing-qin.Two dimension numerical simulation study on high power high efficiency tripling harmonic[J].High Power Laser and Particle Beams,2000,12(8). |
| |
| Authors: | ma chi he yu-juan wei xiao-feng yuan jing luo yong-quan wang jian-jun su jing-qin |
| |
| Institution: | 1. National Key Laboratory of Laser Fusion, P.O.Box919-988, Mianyang 621900, China;2. Department of Optics and Electronics of Sichuan University, Chengdu 610054, China |
| |
| Abstract: | Type Ⅰ/ Type Ⅱ angle detuning tripling frequency scheme of KDP crystal was chose for triple harmonic conversion with large aperture and high power. Based on three wave mixing nonlinear coupling equation, wrote a two dimension program for numerical simulation triple harmonic conversion by introducing discrete Fourier transform and a fourth order Runge-Kutta integrating method. With the code, conversion features and efficiencies of second and third harmonics were calculated with different thickness of crystal and different angle detuning. Tripling frequency system assuming that the intensity distribution of 1ω is super Gaussian distribution with sixth order is optimized. The results showed that the system has both broad dynamic range and more high conversion efficiency. |
| |
| Keywords: | numerical simulation nonlinear crystal |
|
| 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 |
