Continuously tunable mode-spacing of a dual-mode external cavity InAs/InP quantum dot laser

Yuan Hui-Hong; Gao Feng; Yang Tao

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Continuously tunable mode-spacing of a dual-mode external cavity InAs/InP quantum dot laser

机译：连续可调模式 - 间距的双模外腔INAS / INP量子点激光器

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A tunable double-mode external cavity InAs/InP quantum dot laser based on a dual-Littrow configuration is demonstrated. A 115 nm single-mode tuning spectrum with obviously varied mode intensity has been obtained. A modified tuning method has been adopted to realize continuously tunable mode-spacing between two modes. It is found that single and double modes coexist in the tuning spectrum when one grating angle is fixed while the other grating is rotated; the biggest mode-spacing between double modes is about 75 nm. A continuously tunable range of mode-spacing between double wavelengths has reached up to 80 nm by inserting an attenuation slice in the external optical feedback paths to balance the intensity of the double modes; the separation of double modes is about 50 nm at best. The average output power of the double-mode laser is about a few milliwatts. (C) 2017 Optical Society of America

机译：基于双Littrow配置的可调谐双模外腔INAS / INP量子点激光。已经获得了具有明显变化的模式强度的115nm单模调谐频谱。已经采用修改过的调谐方法来实现两种模式之间的连续可调模式间距。发现当另一个光栅旋转时固定一个光栅角度时，单个和双模式在调谐频谱中共存; 双模式之间的最大模式间距约为75 nm。通过在外部光学反馈路径中插入衰减切片以平衡双模式的衰减切片，在外部光学反馈路径中达到最多80nm的连续可调谐的模式间距。双重模式的分离充其量约为50nm。双模激光的平均输出功率约为几毫瓦。（c）2017年光学学会

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《Applied optics》 |2017年第24期|共5页
作者
Yuan Hui-Hong; Gao Feng; Yang Tao;
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Univ Chinese Acad Sci Chinese Acad Sci Key Lab Semicond Mat Sci Coll Mat Sci &

Optoelect Technol Inst Semicond POB 912 Beijing 100083 Peoples R China;

Univ Chinese Acad Sci Chinese Acad Sci Key Lab Semicond Mat Sci Coll Mat Sci &

Optoelect Technol Inst Semicond POB 912 Beijing 100083 Peoples R China;

Univ Chinese Acad Sci Chinese Acad Sci Key Lab Semicond Mat Sci Coll Mat Sci &

Optoelect Technol Inst Semicond POB 912 Beijing 100083 Peoples R China;

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Continuously tunable mode-spacing of a dual-mode external cavity InAs/InP quantum dot laser

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