光子学报, 2009, 38 (8): 1886, 网络出版: 2010-05-10  

杨氏实验中飞秒光脉冲的光谱移动和光谱开关

Spectral Shifts and Spectral Switches of Femtosecond Optical Pulses in Young′s Interference Experiment
作者单位
1 四川大学 激光物理与化学研究所,成都 610064
2 洛阳师范学院 物理系,河南 洛阳 471022
摘要
从惠更斯-菲涅耳衍射积分公式出发,对飞秒光脉冲在杨氏实验中的光谱移动和光谱开关做了研究和数值分析.结果表明,飞秒光脉冲在杨氏实验中也会出现光谱移动和光谱开关.一般情况下,光谱开关与脉冲宽度、载波频率、遮拦比和场点位置有关.光谱开关的数目随遮拦比的减小而减小,而发生光谱开关处的相对光谱移动随载波频率和脉冲宽度的减小而增加.因光谱开关极小值Smin=0,所以光谱开关属于奇点光学现象.可通过适当改变遮拦比来实现信息编码和信息传输.
Abstract
Starting from the Huygens-Fresnel diffraction integral,the spectral shifts and spectral switches of femtosecond optical pulses in Young′s interference experiment are studied and analyzed numerically.It is shown that the spectral shifts and spectral switches,which take place in Young′s interference experiment,depend on the pulse width,carrier frequency,obscuration ratio and the position of field points in general.The number of the spectral switches decreases with decreasing obscuration ratio,and the relative spectral shifts at the spectral switches increases with decreasing carrier frequency and pulse width.The spectral switches studied in this paper belong to the phenomenon of singular optics because the minimum at the spectral switches Smin=0.The information encoding and transmission can be achieved by a suitable variation of the obscuration ratio.

丁超亮, 吕百达, 潘留占. 杨氏实验中飞秒光脉冲的光谱移动和光谱开关[J]. 光子学报, 2009, 38(8): 1886. DING Chao-liang, LV Bai-da, PAN Liu-zhan. Spectral Shifts and Spectral Switches of Femtosecond Optical Pulses in Young′s Interference Experiment[J]. ACTA PHOTONICA SINICA, 2009, 38(8): 1886.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!