The general failure of Kleinman symmetry in practical nonlinear optical applications
The general failure of Kleinman symmetry in practical nonlinear optical applications
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DOI：
10.1016/j.cplett.2004.03.109
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发表时间：
2004-05-21
影响因子：
2.8
通讯作者：
Simpson, GJ
中科院分区：
文献类型：
--
作者：
Dailey, CA;Burke, BJ;Simpson, GJ
证据反驳的普遍适用性的整体排列对称性条件最初提出的Kleinman在描述非共振非线性光学性质的绝大多数的实际材料和系统。Kramers-Kronig色散关系表明，Kleinman对称性的有效性范围比人们普遍认为的要严格得多。这些发现得到了许多实验观测的支持，这些观测明确禁止克莱曼对称性，但允许色散关系。考虑分子的对称性，再加上Kramers-Kronig色散关系产生替代的简单和一般的宏观对称关系，与实验观察是一致的。(C)2004 Elsevier B. V.保留所有权利。
Evidence is presented to refute the general applicability of the overall permutation symmetry condition originally proposed by Kleinman in describing the non-resonant nonlinear optical properties of the overwhelming majority of practical materials and systems. Kramers-Kronig dispersion relations demonstrate that the range of validity of Kleinman symmetry is substantially more restrictive than is widely assumed. These findings are supported by numerous experimental observations of effects explicitly forbidden by Kleinman symmetry but allowed by the dispersion relations. Considerations of molecular symmetry coupled with the Kramers-Kronig dispersion relations yield alternative simple and general macroscopic symmetry relations that are consistent with experimental observations. (C) 2004 Elsevier B.V. All rights reserved.