Peng Ruihong, Li Yu, Huang Weiping
Appl Opt. 2019 Apr 10;58(11):2761-2764. doi: 10.1364/AO.58.002761.
A parity-time-structured Bragg reflection waveguide is proposed and analyzed for realizing a high-power laser. A single transverse mode with the optical field confined mainly in the low-index core is discussed to improve the catastrophic optical damage threshold for high output power. The designed scheme can potentially mitigate the heat buildup by moving the injection from the central narrow core to the outer large-area claddings, while suppressing the coupler mode transversely. The structure can achieve high output power with a short cavity length, low lasing threshold, and high power conversion efficiency.
提出并分析了一种用于实现高功率激光器的奇偶时间结构布拉格反射波导。讨论了一种光场主要限制在低折射率纤芯中的单横向模式，以提高高输出功率下的灾难性光学损伤阈值。所设计的方案可以通过将注入从中心窄纤芯转移到外部大面积包层来潜在地减轻热积累，同时横向抑制耦合器模式。该结构可以在短腔长、低激射阈值和高功率转换效率的情况下实现高输出功率。
