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<p>This paper presents a&#xa0;comprehensive design and simulation study of a&#xa0;LiDAR source based on microstructured edge-emitting laser (EEL), aiming at achieving directional beam steering suitable for integrated photonic sensing platforms. In this work, shallow slots are introduced which offered a&#xa0;well-balanced solution between efficient light extraction and high beam quality, making them optimal for integrated photonic applications requiring directional emission with low divergence. The results demonstrate the divergence angle improves significantly from 3.1° down to 0.87° as period increases indicating enhanced beam collimation and directionality. Meanwhile, a&#xa0;strong inverse correlation between grating period and emission angle has been observed, with large beam steering achieved across a&#xa0;wide angular range of 59°. The dependence of divergence angle on slot depth and their number is also analyzed. These results demonstrate that our design is a&#xa0;versatile and effective approach for integrated beam steering, that could lead to develop compact, high-precision optimized on-chip LiDAR solutions.</p>

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Angle-controlled emission with low-divergence utilizing the microstructured edge-emitting laser for LIDAR

  • 期刊论文

  • 发表日期：

    2026年4月14日

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  • Sidra Farouk,
  • Yufei Wang,
  • Mengqi Wang,
  • Lei Yu,
  • Yibo Yang,
  • Yanmei Su,
  • Jiaoqing Pan,
  • Yejin Zhang

摘要

This paper presents a comprehensive design and simulation study of a LiDAR source based on microstructured edge-emitting laser (EEL), aiming at achieving directional beam steering suitable for integrated photonic sensing platforms. In this work, shallow slots are introduced which offered a well-balanced solution between efficient light extraction and high beam quality, making them optimal for integrated photonic applications requiring directional emission with low divergence. The results demonstrate the divergence angle improves significantly from 3.1° down to 0.87° as period increases indicating enhanced beam collimation and directionality. Meanwhile, a strong inverse correlation between grating period and emission angle has been observed, with large beam steering achieved across a wide angular range of 59°. The dependence of divergence angle on slot depth and their number is also analyzed. These results demonstrate that our design is a versatile and effective approach for integrated beam steering, that could lead to develop compact, high-precision optimized on-chip LiDAR solutions.