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首页> 外文期刊>Optics Letters >Vertical external cavity surface emitting PbTe/CdTe quantum dot lasers for the mid-infrared spectral region
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Vertical external cavity surface emitting PbTe/CdTe quantum dot lasers for the mid-infrared spectral region

机译:垂直外腔表面发射PbTe / CdTe量子点激光器,用于中红外光谱区域

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摘要

Optically pumped vertical external cavity surface emitting lasers (VECSELS) emitting in the mid-infrared range are demonstrated with an active structure based on PbTe quantum dots (QDs) embedded in CdTe. In contrast to Stranski- Krastanov QDs, the PbTe QDs are fabricated by a strain-free synthesis method consisting of a molecular beam epitaxy growth step followed by a post-growth-annealing step. The laser emission of the VECSELs covers a wavelength range between 3.5 and 4.3 mu m by changing the temperature from 85 to 240 K. The threshold power is lower than 100 mW(P) and the output power is more than 50 mW(P) at low temperature. (C) 2014 Optical Society of America
机译:演示了具有基于嵌入CdTe中的PbTe量子点(QD)的有源结构的光泵浦垂直外腔表面发射激光器(VECSELS),该激光器在中红外范围内发射。与Stranski-Krastanov QD相比,PbTe QD是通过无应变合成方法制造的,该方法包括分子束外延生长步骤,然后进行后生长退火步骤。通过将温度从85 K更改为240 K,VECSEL的激光发射覆盖3.5至4.3μm的波长范围。在以下条件下,阈值功率低于100 mW(P),输出功率超过50 mW(P)。低温。 (C)2014年美国眼镜学会

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