| 1. | Splitting of 2nd - soliton is found and the reason of the splitting is analysed and then threshold value of splitting is gotten
发现二阶孤子脉冲的分裂现象，并分析了产生分裂的原因，同时得出了分裂产生的阈值条件。 |
| 2. | In part one , firstly , the dynamic equation of the drefl is deeply investigated and the stability of its stable solution is analyzed , the condition of the threshold is determined
第一部分，首先对双环掺铒光纤激光器的动力学方程进行了深入研究，并对其稳定性进行了分析，确定了它的阈值条件。 |
| 3. | The introduction of the synchronization dimensional structure filter makes the laplace operator improve the segmentation quality with a high real time capability by the original arithmetic
同步空间滤波器的引入，可使原算法在低颜色阈值条件下获得高质量的图像分割结果，且该滤波器的行扫描数据录入方式可以保证高实时性。 |
| 4. | Research improvements are introduced in brief in this article , including selecting optical fiber and fiber - end surface preparation , fiber damage theory and threshold , coupling conductions , coupling efficiency
文中简要介绍了高功率激光耦合的关键技术，包括激光光纤耦合条件、耦合效率、光纤的选择和端面处理、光纤损伤机理及其阈值条件等方面。 |
| 5. | We analyzed the polarizing character , threshold condition , raman shift of srs in different polarizing pumping light . in addition , the empirical formulas on stimulated raman scattering are given . theoretical analyses and experimental results are in good agreement
对它们在不同偏振态泵浦光激励下各级stokes的偏振特性、阈值条件、喇曼频移等各参数进行了分析，并给出了经验公式，其结果和实验数据符合良好。 |
| 6. | General method of similar sequence mining based on time series is to transform time series into discrete character series and cluster them into different sets , then compute the euclidean distance between querying series and these sets to measure their similarity
摘要时间序列数据库中相似子序列的搜索，常用滑动窗口、分形插值逼近等方法将时间序列分割成各子序列，线性拟合各分段子序列，计算查询序列与各子序列的欧氏距离，满足距离阈值条件的为相似子序列。 |
| 7. | In this paper the average field is used to describe the carrier in each segment based on the carrier distribution in two - segment dfb lasers and the strict coupled wave theory is used to describe the photon density . combined with these two methods , the threshold condition expression has been derived for the first time
基于两段式dfb激光器中的载流子分布事实，本文对每一段内的载流子浓度用平均场方法处理；对于激光器内的光场分布则应用严格的耦合波理论进行研究，通过将这两种方法有机结合，首次导出了两段式dfb激光器的阈值条件表达式。 |
| 8. | Based on these foundations , we give a perfect scheme of the bbo opos : single pass amplification coefficient of the opg under different pump intensity is calculated ; collinear type - i and type - ii phase matching tuning curve pumped by the q switch nd : yag various harmonics as well as noncollinear type - i tuning curve are calculated in details ; the effect of the walkoff for the nonlinear effect coefficient and the group velocity matching are analyzed ; the acceptance angle in parametric process is calculated ; the numerical threshold of the bbo opo is calculated ; the process of the saturation and depletion of the pump beam are analyzed ; the relationship of the conversion efficiency and reflectance of output mirror are discussed ; various linewidth controlling methods are discussed ; the improvement of the beam quality applying the unstable cavity is discussed ; and the crystal bbo design is considered
在此基础上，给出了一整套bbo - opo激光参数设计方案：计算了不同泵浦强度下的参量放大倍数；详细计算了在nd : yag调q激光器各次谐波泵浦条件下的共线类和类相位匹配的调谐曲线，以及非共线类相位匹配调谐曲线；分析了走离角对非线性系数和群速匹配的影响；计算了参量过程的允许角；计算了bbo - opo的理论阈值条件；分析了饱和与泵浦光束的消耗过程；给出了转换效率与超过泵浦阈值的倍数的关系；讨论了转换效率与输出镜反射率的关系；讨论了线宽控制的各种方法；研究了利用非稳腔改善光束质量的方法；考虑了bbo晶体的设计。 |
| 9. | The equivalent cavity model is used to deduce the threshold condition of the ecld , and the expression of the threshold carrier density n ( v ) when ecld is tuned to oscillate at different frequencies has been obtained . using the expression of n ( v ) and the carrier dependent refractive index , the simple basic equation describing the bistable characteristics has been derived after choosing an appropriate reference frequency nf
通过建立等效腔模型来推导外腔半导体激光器的阈值条件，得到ecld在不同频率v振荡所需的阈值载流子密度n ( v )表达式，利用该表达式及相关的折射率表达式，在选择合适的参考载流子密度n _ f后，导出了一个描述双稳所需的基本方程。 |
| 10. | In the section of theory , we mainly studied optical parameter effect , discussed physical mechanism of optical parameter laser and normalized coupled wave equation and got the solution . we also carried out the analysis of gain mode of optical parameter oscillation , studied the threshold condition , analyzed output characteristics and then achieved characteristic curve
本文理论部分主要作了有关光参量效应方面的研究，探讨了光参量振荡器的物理机制、参量振荡的归一化耦合波方程，求解得到了参量振荡器的耦合波函数，同时对光参量振荡的增益模式进行了分析，研究了使参量振荡的阈值条件，并对光参量振荡器的输出特性进行了分析，得到了特性曲线。 |
