LD端面泵浦全固态连续单纵模3微米激光器的理论研究

理论研究了LD端面泵浦全固态连续单纵模3μm激光器的输出特性。基于对Er:YAG激光器的能量过程的分析,建立了考虑晶体热效应影响的速率方程模型,讨论了晶体控温温度、掺杂浓度、晶体长度、泵浦-振荡激光模式匹配比率、输出镜透射率、单向器插入损耗等参数对连续单纵模3μm激光输出特性的影响,为高功率连续单纵模3μm激光光源的设计和优化提供了理论依据。     

醉泥螺的品质工艺

无沙率,脆度,细菌总数是醉泥螺品质的重要指标,研究表明盐度,温度是影响泥螺吐沙的主要因素,高醇短时间杀菌及辐照能降低细菌含量,而啤酒调配能改善产品风味并增加脆度。     

Fast impurity solver for dynamical mean field theory based on second order perturbation around the atomic limit

This paper proposes an impurity solver for the dynamical mean field theory (DMFT) study of the Mott insulators, which is based on the second order perturbation of the hybridization function. After careful benchmarking with quantum Monte Carlo results on the anti-ferromagnetic phase of the Hubbard model, it concludes that this impurity solver can capture the main physical features in the strong coupling regime and can be a very useful tool for the LDA (local density approximation) +,DMFT studies of the Mott insulators with long range order.