制备了一种新型的具有高调制带宽的1 053 nm超辐射发光二极管(SLD).利用光荧光(PL)测试分析了不同温度、不同生长速率对SLD芯片外延材料质量的影响,优化了In Ga As/Ga As量子阱的生长温度与生长速率.分析了SLD模块的光电特性随温度与注...制备了一种新型的具有高调制带宽的1 053 nm超辐射发光二极管(SLD).利用光荧光(PL)测试分析了不同温度、不同生长速率对SLD芯片外延材料质量的影响,优化了In Ga As/Ga As量子阱的生长温度与生长速率.分析了SLD模块的光电特性随温度与注入电流的变化关系.研究结果表明,SLD输出波长随温度的漂移系数为0.35 nm/℃,其输出波长随注入电流的漂移对温度并不敏感.在25℃、100 m A注入电流下SLD的-3 d B调制带宽达到1.7 GHz,尾纤输出功率2.5 m W,相应的光谱半宽为24 nm,光谱波纹为0.15 d B.展开更多
A second harmonic generation system with two type II KDP crystals in quadrature is optimized for the nanosecond chirp pulse. The acceptance bandwidth of this optimizing scheme is close to 10 nm by using two crystals w...A second harmonic generation system with two type II KDP crystals in quadrature is optimized for the nanosecond chirp pulse. The acceptance bandwidth of this optimizing scheme is close to 10 nm by using two crystals with slightly opposite angular detuning from phase matching and the conversion efficiency can reach 70% for top-hat chirp pulse at -2 GW/cm^2 in theory. The preliminary experimental results are obtained on the 9th beam of Shen Guang Ⅱ SGⅡ laser system, and the performance of optimization is partially verified.展开更多
文摘制备了一种新型的具有高调制带宽的1 053 nm超辐射发光二极管(SLD).利用光荧光(PL)测试分析了不同温度、不同生长速率对SLD芯片外延材料质量的影响,优化了In Ga As/Ga As量子阱的生长温度与生长速率.分析了SLD模块的光电特性随温度与注入电流的变化关系.研究结果表明,SLD输出波长随温度的漂移系数为0.35 nm/℃,其输出波长随注入电流的漂移对温度并不敏感.在25℃、100 m A注入电流下SLD的-3 d B调制带宽达到1.7 GHz,尾纤输出功率2.5 m W,相应的光谱半宽为24 nm,光谱波纹为0.15 d B.
基金supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China under Grant No.1229241A00
文摘A second harmonic generation system with two type II KDP crystals in quadrature is optimized for the nanosecond chirp pulse. The acceptance bandwidth of this optimizing scheme is close to 10 nm by using two crystals with slightly opposite angular detuning from phase matching and the conversion efficiency can reach 70% for top-hat chirp pulse at -2 GW/cm^2 in theory. The preliminary experimental results are obtained on the 9th beam of Shen Guang Ⅱ SGⅡ laser system, and the performance of optimization is partially verified.
