arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.16922physics.optics
收藏

硅基垂直纳米线激光器高质量反射镜的设计

Design of High-Quality Reflectors for Vertical Nanowire Lasers on Si

Xing Zhang, Hui Yang, Yunyan Zhang, Huiyun Liu

备注：
5
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

纳米线具有独特的一维结构，可以将高质量的III-V族半导体单片集成到Si平台上，这在构建Si光子学激光器方面具有很大的潜力。然而，与从衬底上断开的纳米线相比，从硅上垂直站立的纳米线产生激光要困难得多，这给集成带来了重大挑战。在这里，实现垂直站立的NW激光器的挑战进行了系统的分析。NW/Si界面处的光反射率差导致严重的光场泄漏到衬底中，通常使用的界面处的SiO2或Si 2N 3介质掩模只能将其改善到~ 10%，这是实现低阈值激光的主要障碍。提出了一种NW超晶格分布布拉格反射器，它可以将反射率提高到97%以上。该研究为大幅度提高垂直放置NW激光器的性能提供了一种可行的方法，可以促进硅光子学的快速发展。

英文摘要：

Nanowires (NWs) with a unique one-dimensional structure can monolithically integrate high-quality III-V semiconductors onto Si platform, which is highly promising to build lasers for Si photonics. However, the lasing from vertically-standing NWs on silicon is much more difficult to achieve compared with NWs broken off from substrates, causing significant challenges in the integration. Here, the challenge of achieving vertically-standing NW lasers is systematically analyzed. The poor optical reflectivity at the NW/Si interface results severe optical field leakage to the substrate, and the commonly used SiO2 or Si2N3 dielectric mask at the interface can only improve it to ~10%, which is the major obstacle for achieving low-threshold lasing. A NW super lattice distributed Bragg reflector is therefore proposed, which is able to greatly improve the reflectivity to >97%. This study provides a highly-feasible method to greatly improve the performance of vertically-standing NW lasers, which can boost the rapid development of Si photonics.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑