The design assessment of lambda /4 phase-shifted DFB laser structures
The design assessment of lambda /4 phase-shifted DFB laser structures
复制标题
DOI：
10.1109/3.29257
复制
发表时间：
1989-06
影响因子：
2.5
通讯作者：
J. Whiteaway;G. Thompson;A. Collar;C. J. Armistead
中科院分区：
文献类型：
--
作者：
J. Whiteaway;G. Thompson;A. Collar;C. J. Armistead
讨论了单频激光结构在阈值以下和阈值以上工作时的详细非线性模型。均匀间距光栅、线性啁啾间距光栅和平面导截面的任意串联组合可以进行分析，同时考虑纵向模空间烧孔。可以指定器件结构的每个部分的材料特性。预测了激光器两端的输出功率和发射波长，以及纵向强度、载流子密度和相对介电常数分布作为驱动电流高于阈值的函数。在考虑自发辐射以物理方式进入模态的不均匀纵向分布的情况下，还估计了线宽。该模型用于为权衡λ /4相移DFB（分布反馈）激光器的众多相互作用性能参数提供数据。然后总结设计选项。>
A detailed nonlinear model of the performance of single-frequency laser structures operating both below and above threshold is discussed. Arbitrary series combinations of uniform pitch grating, linearly-chirped pitch grating and plane guide sections can be analyzed-taking longitudinal-mode spatial hole burning into account. The material properties of each section of a device structure can be specified. The output power from each end of the laser and the emission wavelength, and the longitudinal intensity, carrier density, and relative permittivity profiles are predicted as a function of drive current above threshold for each lasing mode. The linewidth is also estimated while allowing for the nonuniform longitudinal distribution of spontaneous emission into the mode in a physical manner. The model was used to provide the data with which to trade off the numerous interacting performance parameters of a lambda /4 phase-shifted DFB (distributed-feedback) laser. The design options are then summarized. >