1.3 μm InAs/GaAs quantum-dot lasers grown on planar on-axis Si (001) substrates with high slope-efficiency and low differential resistance

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-25 DOI:10.1088/1612-202x/ad3439

Feng Lin, Jun Wang, Hao Zhai, Shuaicheng Liu, Qing Ge, Yanan Chen, Chuanjiang Liu, Kaize Mao, Hao Liu, Yiming Bai, Qi Wang, Yongqing Huang, Xiaomin Ren

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Abstract

We report electrically pumped continuous-wave (CW) InAs/GaAs quantum dot lasers monolithically grown on planar on-axis Si (001) substrates. Combining an asymmetric waveguide epitaxy structure with aluminium-free upper cladding layers and a symmetrical cathode chip structure, 1.3 μm band lasers with low differential resistance and high slope-efficiency have been achieved. Moreover, the optimized symmetrical cathode structure of the laser chips is used to improve the slope-efficiency by reducing the differential resistance and waste heat. The Fabry–Perot broad-stripe edge-emitting lasers with 2000 μm cavity length and 15 μm stripe width achieve a single-facet output power of 73 mW, a single-facet slope efficiency of 0.165 W A⁻¹, and a differential resistance of 1.31 Ω at ∼1.31 μm wavelength under CW conditions at room temperature (25 °C). Importantly, these results provide an effective strategy to achieve 1.3 μm wavelength band single-mode distributed feedback lasers directly on planar on-axis Si (001) substrates with high efficiency.

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在平面同轴硅 (001) 衬底上生长的 1.3 μm InAs/GaAs 量子点激光器具有高斜率效率和低差分电阻

我们报告了在平面同轴硅 (001) 衬底上单片生长的电泵浦连续波 (CW) InAs/GaAs 量子点激光器。结合非对称波导外延结构、无铝上覆层和对称阴极芯片结构，实现了具有低差分电阻和高斜率效率的 1.3 μm 波段激光器。此外，经过优化的激光芯片对称阴极结构还可通过降低差分电阻和废热来提高斜率效率。法布里-珀罗宽条纹边缘发射激光器的腔长为 2000 μm，条纹宽度为 15 μm，在室温（25 °C）下的 CW 条件下，单面输出功率为 73 mW，单面斜率效率为 0.165 W A-1，在 1.31 μm 波长处的差分电阻为 1.31 Ω。重要的是，这些结果为直接在平面轴向硅（001）衬底上实现具有高效率的 1.3 μm 波长带单模分布反馈激光器提供了一种有效的策略。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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