ABSTRACT High-resolution spectral analysis of a multimode GaN-based blue laser diode was performed as a function of temperature and current both below and above the threshold levels. Maps of longitudinal modes evolution as a function of current and temperature were obtained from the highly resolved emission spectra of the laser diode. The evolution of emitted longitudinal modes with current and temperature exhibited redshifts at rates of 0.0059 nm/mA and 0.0149 nm/°C, respectively. Similarly, the laser gain profile was observed to shift towards longer wavelengths but with rates of 0.022 nm/mA and 0.0439 nm/°C. The longitudinal mode spacing of 0.0540 nm was experimentally evaluated and compared with its equivalent theoretically predicted value.

中文翻译：

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多模 GaN 基蓝色激光二极管的光谱和空间动力学

摘要 作为温度和电流（低于和高于阈值水平）的函数，对基于多模 GaN 的蓝色激光二极管进行高分辨率光谱分析。从激光二极管的高分辨率发射光谱中获得了作为电流和温度函数的纵模演化图。发射纵模随电流和温度的演变分别以 0.0059 nm/mA 和 0.0149 nm/°C 的速率发生红移。类似地，观察到激光增益分布向更长的波长移动，但速率为 0.022 nm/mA 和 0.0439 nm/°C。通过实验评估了 0.0540 nm 的纵模间距，并与其等效的理论预测值进行了比较。