Vugmeister B, Bulatov A, Rabitz H
Opt Express. 1997 Sep 15;1(6):169-74. doi: 10.1364/oe.1.000169.
We argue that in nonlinear optical systems with atoms randomly distributed in crystals or amorphous hosts one should go beyond the Clausius-Mossoti limit in order to take into account the effect of local eld uctuations induced by congurational disorder in atom position. This eect is analyzed by means of a random local mean field approach with neglect of correlations between dipole moments of different atoms. The formalism is applied to 3-level type systems with quantum coherence possessing an absorptionless index of refraction and lasing without inversion. We show that the eect of congurational fluctuations results in the suppression of the atom susceptibility compared with the predictions based on the Clausious-Mossoti equation.
我们认为，在原子随机分布于晶体或非晶基质中的非线性光学系统中，为了考虑原子位置的构型无序所引起的局部场涨落的影响，人们应该超越克劳修斯 - 莫索蒂极限。通过一种随机局部平均场方法对这种效应进行了分析，该方法忽略了不同原子偶极矩之间的相关性。这种形式体系被应用于具有量子相干性、拥有无吸收折射率且能实现无粒子数反转激光振荡的三能级系统。我们表明，与基于克劳修斯 - 莫索蒂方程的预测相比，构型涨落的效应导致原子磁化率受到抑制。
