Ultra low RIN, low threshold AlGaInAs/InP BH-DFB laser

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-26 DOI:10.1051/jeos/2024023

jianhua Ren

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Abstract

This study presents a comparative analysis of DFB lasers based on AlGaInAs/InP heterostructures, exploring the impact of different groove shapes and cavity lengths on laser output characteristics. Leveraging the vertical groove structure, we achieved a remarkable laser output of 90mW at 25°C. Compared to lasers without grooves, this represents a 3.6-fold increase in output power, coupled with an impressively low threshold current of only 4mA. In addition, we conducted a study on the temperature stability of the laser, revealing that even at elevated temperatures of 85°C, the laser maintains an edge mode suppression ratio of over 45dB. This demonstrates the robustness and reliability of the laser over a wide range of operating conditions, further enhancing its suitability for practical applications in diverse environments. Upon packaging the chip into a butterfly shape, we observed a significant reduction in relative intensity noise, with values below -162.8 dB/Hz across the frequency range of 0-40 GHz, while operating at an output power of 3mW. These findings underscore the robustness, reliability, and high-performance capabilities of the developed DFB laser, highlighting its potential for various practical applications.

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超低 RIN、低阈值 AlGaInAs/InP BH-DFB 激光器

本研究对基于 AlGaInAs/InP 异质结构的 DFB 激光器进行了比较分析，探讨了不同沟槽形状和腔长对激光输出特性的影响。利用垂直凹槽结构，我们在 25°C 时实现了 90mW 的出色激光输出。与没有凹槽的激光器相比，输出功率提高了 3.6 倍，而且阈值电流仅为 4 毫安，令人印象深刻。此外，我们还对激光器的温度稳定性进行了研究，结果表明，即使在 85°C 的高温下，激光器也能保持超过 45dB 的边缘模式抑制比。这证明了该激光器在各种工作条件下的稳健性和可靠性，进一步提高了其在各种环境中的实际应用。将芯片封装成蝶形后，我们观察到相对强度噪声显著降低，在 0-40 GHz 的频率范围内，噪声值低于 -162.8 dB/Hz，同时输出功率为 3mW。这些发现凸显了所开发的 DFB 激光器的坚固性、可靠性和高性能，突出了其在各种实际应用中的潜力。

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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.