The temporal dynamics and spectral filtering of gain gratings are summarized from theory and experiments and which kinds of gain grating contribute to the self-starting holographic laser oscillator is explained in this paper.
本文综述了增益光栅的瞬态动力学特性和频谱滤波特性以及各种类型光栅在自启动全息激光振荡器中的贡献。
Since the presence of a out coupling hole alters the transverse structure of the intra cavity light in a FEL oscillator,the finite element method is used to the optical field equations and a good proximation is made for the out coupling process in the mirror,and then some numerical results are given.
针对孔耦合波导自由电子激光振荡器腔内光场横向特性，应用有限元法于慢变光场方程，并对输出腔镜上孔耦合过程加以较准确的描述，而后通过对数值结果的分析比较，说明这一模拟方法较好地描述了孔耦合引起的腔内光场横向结构的变化发展特性，改善了模拟结果。
In this paper, based on the CAEP FIR FEL oscillator, we study the numerical simulation of hole-coupling waveguide FEL and pay special attention to the evolution of intra-cavity optical field.
基于中物院远红外自由电子激光振荡器，研究了孔输出波导ＦＥＬ的数值模拟，对孔耦合及其引起的腔内光场的变化给以特别的注意，依据数值结果，分析了孔耦合ＦＥＬ光场横向结构的特性。