【摘要】 为了得到中心对称单光子光折变介质中空间灰孤子的结果,基于光束在中心对称单光子光折变晶体中传播方程,证明了稳态条件下在中心对称单光子光折变晶体中可以形成空间灰孤子。分别讨论了光束灰度、外加电场及入射光强与背景光和暗辐射强度之和的比值对灰孤子空间包络和半峰全宽的影响。当光束的灰度m=0时,空间灰孤子可直接退化为中心对称空间暗孤子。更多还原

【Abstract】 To obtain results of the gray spatial solitons in biased one-photon centrosymmetric photorefractive crystals.Based on the beam propagation dynamic equation,it is theortically demonstrated that the gray spatial solitons can exist in biased one-photon centrosymmetric photorefractive crystals under steady-state conditions.The impact of the grayness parameter,the external bias field and the ratio of intensity at infinity to the background and drak beam on the normalized intensity profiles and FWHM of the grey spatial solitons are discussed.When the grayness m=0,these gray solitons degenerate to dark solitons automatically.更多还原