A High-Power Fundamental-Mode Lateral Microstructure Laser

Chang, Jinyuan; Cong, Xin; Qi, Qiong; Hao, Shuang; Liu, Suping; Ma, Xiaoyu

doi:10.1109/lpt.2023.3285267

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2024

2025

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“…Moreover, certain methods are technologically intricate, consequently constraining their applicability. Microstructures [16][17][18] have been implemented in near and mid-infrared lasers to compensate for the poor mode discrimination of BA lasers by selectively introducing higher-order mode optical losses. Considering the power maintenance, simplicity, and stable mode selection performance, the devices have great potential for applications.…”

Section: Introductionmentioning

confidence: 99%

Precise mode control of mid-infrared high-power laser diodes using on-chip advanced sawtooth waveguide designs

Shi,

Yang,

Chen

et al. 2024

High Pow Laser Sci Eng

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Power scaling in conventional broad-area (BA) lasers often leads to the operation of higher-order lateral modes, resulting in a multiple-lobe far-field profile with large divergence. Here, we report an advanced sawtooth waveguide (ASW) structure integrated onto a wide ridge waveguide. It strategically enhances the loss difference between higherorder modes and the fundamental mode, thereby facilitating high-power narrow-beam emission. Both optical simulations and experimental results illustrate the significant increase

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Section: Introductionmentioning

confidence: 99%