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1)  photorefractive media
光折变介质
1.
The characteristic of the photovoltaic spatial solitons in two-photon photorefractive media is influenced by the temperature of the media.
具有双光子光折变效应的光折变介质温度的变化对光伏孤子性质具有影响。
2.
Based on an exact solution of nonlinear coupled wave differential equations for photorefractive media, a conservative quantity which plays an important role in the process of deriving the exact solution is discussed.
光折变介质中非线性耦合波微分方程的一种精确解为基础,对在推导这种精确解过程中起重要作用的一个守恒量进行讨论。
3.
A new solution of the four wave coupling equations in photorefractive media is given on the basis of a new conserved quantity proposed by the author.
提出新守恒量的基础上,推导出光折变介质中四波耦合方程的一种新解法,并讨论了这种解法在分析相位共轭光束动力学行为中的应
2)  two-photon photovoltaic photorefractive media
双光子光伏光折变介质
1.
Temperature effects on the dynamical evolution and self-deflection characteristics of bright photovoltaic spatial solitons in two-photon photovoltaic photorefractive media are investigated by taking into account the temperature dependence of both diffusion effects and dark irradiation.
基于扩散效应及暗辐射强度对温度的依赖关系,研究了温度对双光子光伏光折变介质中亮光伏空间孤子动态演化及自偏转特性的影响。
2.
Dynamical evolution and self-deflection of matching Gaussian beam in two-photon photovoltaic photorefractive media without external electric field is numerically investigated.
通过数值模拟的方法,研究了无偏压双光子光伏光折变介质中匹配高斯光束的动态演化及自偏转特性。
3)  two-photon photorefractive medium
双光子光折变介质
1.
Incoherently-coupled bright-dark hybrid screening spatial soliton families in biased two-photon photorefractive medium
双光子光折变介质中非相干耦合亮-暗混合屏蔽孤子族
4)  medium of varying refractive index
折射率可变介质
5)  photorefractive properties
光折变性质
6)  refractive medium
折射介质
补充资料:折变
      宋赋税输纳办法之一,实际上成为一种加税名目。征科赋税有固定物品,官府根据一时所需,变而取之,谓之折变。按照规定,折变并用平估,使其值轻重相当,且以纳月上旬时估中价准折,实际上却往往增取其值,亏损人户。如纳麦在六月,州县遂串通市司于五月中先减麦价,仅留三四分,待科折已定,即顿增价。大观二年(1108),京西路以盐钱、杂钱折变物料,孟州温县小麦实价每斗为钱一百二十文,而折变只作五十二文;颍州汝阴县(今安徽阜阳)实价一百一十二文,折变只作三十七文。陕西路粮价,大观四年已数倍于往昔,折变却仍用熙丰之价,致使税户陡增六七倍之赋。按照规定,折变物色数额,须于起纳前揭榜晓示,实际上却往往临时变更,反复纽折。如应纳现钱,即小估价值令纳绸绢,又以绸绢之值折纳丝绵,复将所纳丝绵回纳现钱;以绢较钱,绢倍于钱,以钱较绵,钱又倍于绵。反复纽折,辗转增加。南宋初,两淮州县一亩地的赋税,经过纽折竟高达四五斗,为正税的四五倍以上。
  

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