Broadband 6μm<λ<8μm superluminescent quantum cascade light-emitting diodes

Broadband 6μm<λ<8μm superluminescent quantum cascade light-emitting diodes
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宽带6μm<λ<8μm超发光量子级联发光二极管

DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
M. Hopkinson
M. Hopkinson
中科院分区：
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文献类型：
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作者：
E. Zibik;W. Ng;D. Revin;L. Wilson;J. Cockburn;K. Groom;M. Hopkinson

文献摘要

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报道了子带间超辐射发光二极管的中红外辐射。利用设计的11个不同波长的量子级联激光器有源区，我们获得了7μm左右的宽带发射光谱，半峰全宽为10.2 μm。通过引入额外的镜损耗的法布里-珀罗谐振腔中使用的只是一个单一的解理面，与湿蚀刻形成的其他镜，激光阈值电流显着增加，并观察到超线性的光电流特性。在低温下测得了几十μW的光峰值功率。
Midinfrared emission from intersubband superluminescent light-emitting diodes is reported. We have obtained broadband emission spectra at around 7μm with a full width at half maximum of ∼2μm, using quantum-cascade-laser active regions designed to emit at 11 different wavelengths simultaneously. By introducing additional mirror loss in the Fabry–Perot resonator using just a single cleaved facet, with the other mirror formed by wet etching, the laser threshold current is significantly increased and superlinear light-current characteristics are observed. Optical peak powers of several tens of μW are measured at low temperatures.