利用快速傅立叶算法模拟离轴混合腔的光场分布  

Intensity Distribution Simulation of Off-axis Hybrid Resonator by Fast Fourier-transform

作　　者：王宁[1] 陆雨田[2] 李代林[1] 

机构地区：[1]中国石油大学(华东)物理科学与技术学院,东营257061 [2]中国科学院上海光学精密机械研究所,上海201800

出　　处：《科学技术与工程》2008年第19期5512-5515,共4页Science Technology and Engineering

基　　金：国家自然科学基金(40704021)资助

摘　　要：针对快速傅立叶方法在计算离轴非稳腔中存在的困难,在Sziklas和Siegman的波函数坐标变换理论的基础上稍作调整,计算了离轴混合腔的腔内光场分布、近场输出光强分布和远场光强分布,并与实验测得的光强分布曲线做了比较,得到了较为理想的理论模拟结果。同时,理论模拟结果也表明了利用离轴非稳腔能够得到高光束质量的激光输出。In simulation of off-axis unstable resonator, the usual FFT method is difficult to use. The intensity distribution is simulated by adjusted algorithm, based on the Sziklas＇ and Siegman＇ s coordinate transformation FFT algorithm. The intracavity intensity distribution, output intensity distribution and far-field intensity distribution are showed. By comparison with experiment intensity distribution curves, the simulation results are satisfying. The simulation cures also indicated that high beam quality output laser can be got by off-axis unstable resonator.

关 键 词：离轴非稳腔 部分端面泵浦 快速傅立叶变换 

分 类 号：TN248.1[电子电信—物理电子学]