Submicron ultraviolet single-mode microlaser enabled by electrical pumping

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-05-05 DOI:10.1063/5.0267655

Kai Xu, Xiangbo Zhou, Peng Wan, Daning Shi, Caixia Kan, Mingming Jiang

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引用次数: 0

Abstract

Electrically pumped single-mode micrometer/submicrometer lasers, are promising for optical interconnects, data communications, biosensing, optical 3D facial recognition, and other fields. Generally, reducing the cavity size for expanding the free spectral range is the most direct and effective approach to constructing single-mode lasers. However, current research primarily focuses on achieving this through optical pumping, due to the inadequate electrical and optical properties of low-dimensional semiconductors. Herein, a stable room-temperature whispering-gallery-mode microlaser diode driven by electricity is developed, integrating the grown indium-doped ZnO submicrometer-wire (ZnO:In SMW) as the gain medium. Under electrical pumping conditions, the diode enables lasing in the ultraviolet spectral region at ∼382.8 nm, accompanied by the effective suppression of spontaneous radiation. Specifically, capitalizing on the exceptional quality laser gain material and well-designed device architecture, it exhibits fascinating characteristics, including a high quality (Q)-factor (∼2552), a low-threshold current (∼10.5 mA), and robust single-frequency lasing operation. This work paves a pathway for the advancement of single-mode miniaturized lasers with electrical stimulation.

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亚微米紫外单模微激光器由电抽运实现

电泵浦单模微米/亚微米激光器，在光学互连、数据通信、生物传感、光学3D面部识别和其他领域有前景。一般来说，减小腔体尺寸以扩大自由光谱范围是构建单模激光器最直接、最有效的方法。然而，由于低维半导体的电学和光学特性不足，目前的研究主要集中在通过光泵浦来实现这一目标。本文以生长的掺杂铟的ZnO亚微米线（ZnO:In SMW）为增益介质，研制了一种室温稳定的电驱动微激光器。在电泵浦条件下，二极管能够在~ 382.8 nm的紫外光谱区域产生激光，同时有效抑制自发辐射。具体来说，利用高质量的激光增益材料和精心设计的器件架构，它表现出迷人的特性，包括高质量(Q)因子（~ 2552），低阈值电流（~ 10.5 mA）和稳健的单频激光操作。这项工作为电刺激单模小型化激光器的发展铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.