,Off-Axis Astigmatic Gaussian Beam Combination Beyond the Paraxial Approximation

来源 :中国物理快报(英文版) | 被引量 : 0次 | 上传用户:guomeixiang
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Taking the off-axis astigmatic Gaussian beam combination as an example, the beam-combination concept is extended to the nonparaxial regime. The closed-form propagation expressions for coherent and incoherent combinations of nonparaxial off-axis astigmatic Gaussian beams with rectangular geometry are derived and illustrated with numerical examples. It is shown that the intensity distributions of the resulting beam depend on the combination scheme and beam parameters in general, and in the paraxial approximation (i.e., for the small f-parameter)our results reduce to the paraxial ones.
其他文献
Franck-Condon factors and r-centroids for the A1∑u+-X1∑g+ band system of 107,109Ag2 are computed using Morse and Rydberg-Klein-Rees potentials for both lower
期刊
期刊
每天起床后,杨灏习惯边吃早餐边读手机报,随后匆匆去上班。在拥挤的地铁里,他仍然不停地浏览手机新闻。到了公司,刚在办公桌前坐下,杨灏就打开电脑,挂上QQ、MSN,开始跟朋友交
期刊
粮、糖兼用型甜高粱新品种是世界上近年发展起来的一种新兴糖料、能源和优质饲料作物。制糖、酿酒及饲用均属经济效益较高有待发展的产业部门。为此,我所于1985年初通过中国
梯级筑坝显著改变了河流碳的生物地球化学循环.为了了解梯级筑坝对河流 HCO3-的影响,本文对乌江中上游梯级水库的 HCO3-浓度、溶解无机碳同位素(δ13CDIC)及相关的环境参数进
A leaing algorithm based on the state superposition principle is presented. The theoretical analysis shows that the needed fundamental transformations to realiz
期刊
It is shown that the configuration of phase coding for quantum key distribution with single photon can also be used for continuous variable quantum key distribu
期刊
Electron spin resonance (ESR) in polycrystalline diamond films grown by dc arc-jet and microwave plasma chemical vapour deposition is studied. The films with ni
期刊
We show that a potential eavesdropper can eavesdrop whole secret information when the legitimate users use secure carrier to encode and decode classical informa
期刊