【摘要】 采用正向交流特性结合I-V特性的方法,检测了激光二极管的串联电阻、理想因子、结电压和结电容与外加电压或电流的关系.首次发现,激光二极管的结电压、串联电阻、理想因子和结电容在阈值附近同时出现了明显的阶跃,之后结电压呈现饱和.此外还观察到,在较低的测试频率和较大的正向电压下,激光二极管的结电容具有负值.更多还原

【Abstract】 The dependence of series resistance,ideality factor,junction voltage,and capacitance on the applied voltage or current of laser diodes (LDs) is determined by examining forward AC behavior together with I-V characteristics.The experimental results,for the first time, demonstrate that the junction voltage saturation occurs after the junction voltage,series resistance,ideality factor,and junction capacitance simultaneously show step offsets near the threshold.A negative capacitance effect in LDs is also observed under larger voltages or lower frequencies.更多还原