克爾效應對高斯光束質量M2因子的影響及抑制
基本介紹
- 中文名：標度因子
- 釋義：克爾效應對高斯光束的影響
- 計算方法：分步傅立葉方法
- 影響：克爾效應越強因子影響越大
正文,摘 要,相關連線,
正文
克爾效應對高斯光束質量M2因子的影響及抑制
摘 要
用分步傅立葉方法計算了高斯光束在克爾介質中的傳輸過程，採用最小均方根辦法對光場進行二項式曲線擬合得到光束質量因子，計算結果表明：當B積分在2rad以內，克爾效應越強則它對因子影響越大；同時，它的這種影響能力也受到光束寬度和光束腰平面到克爾介質的距離的兩個因素的影響，即光束越寬，影響越小，距離越大，影響反而較小；最後，基於B積分的可疊加性，提出用具有負非線性折射率係數的非線性介質來補償正克爾效應、降低光束因子，並指出兩端補償是最優的方式之一．
標 簽 非線性光學 光束質量M2因子 克爾效應 非線性補償 Nonlinear optics Factor Kerr effect Nonlinear compensation
Abstract
The process of the Gaussian beam propagating through the nonlinear medium is calculated by step FFT,and the M2 factor is get by minimizing the root-mean-square of the quadratic curve,the simulation results show: on the condition that the B integral is no more than 2,the stronger the Kerr effect is,and the bigger the M2 factor is;and in which the beam width and the length between the waist plane and the nonlinear medium are two important factors on the influence between the Kerr effect and M2 factor,namely the narrower beam width and the longer length are,the and the bigger the M2 factors are.The compensation adopting the negative nonlinear refractive index medium to reduce the Kerr effect is studied and the beam quality is improved effectively. The both side compensation is selected as an idea method in the three types of methods.
標 簽 非線性光學 光束質量M2因子 克爾效應 非線性補償 Nonlinear optics Factor Kerr effect Nonlinear compensation
Abstract
The process of the Gaussian beam propagating through the nonlinear medium is calculated by step FFT,and the M2 factor is get by minimizing the root-mean-square of the quadratic curve,the simulation results show: on the condition that the B integral is no more than 2,the stronger the Kerr effect is,and the bigger the M2 factor is;and in which the beam width and the length between the waist plane and the nonlinear medium are two important factors on the influence between the Kerr effect and M2 factor,namely the narrower beam width and the longer length are,the and the bigger the M2 factors are.The compensation adopting the negative nonlinear refractive index medium to reduce the Kerr effect is studied and the beam quality is improved effectively. The both side compensation is selected as an idea method in the three types of methods.
相關連線
閉環方波調製諧振型光纖陀螺標度因子非線性分析
