Anisotropic polarization characteristics of lasing and spontaneous surface and edge emissions from deep-ultraviolet (λ≈240 nm) AlGaN multiple-quantum-well lasers
Anisotropic polarization characteristics of lasing and spontaneous surface and edge emissions from deep-ultraviolet (λ≈240 nm) AlGaN multiple-quantum-well lasers
复制标题
DOI：
10.1063/1.2236792
复制
发表时间：
2006-07-24
影响因子：
4
通讯作者：
Nukui, Takeaki
中科院分区：
文献类型：
--
作者：
Kawanishi, Hideo;Senuma, Masanori;Nukui, Takeaki
作者报告了他们的实验发现，横向磁场（TM）模式偏振的激光和自发边缘发射（各向异性偏振发射）以上和以下的激光阈值从AlGaN多量子阱（MQW）激光器在240.8 nm。深紫外多量子阱发射非常弱或没有表面发射（各向异性偏振发射）低于阈值。另一方面，AlGaN多量子阱激光器在355.1 nm处工作在高于阈值的横向电场（TE）模式下，并且在低于阈值的情况下观察到均匀的高强度自发表面发射以及TE和TM模式边缘发射（各向同性发射）。
The authors report on their experimental discovery of a transverse-magnetic-field (TM)-mode polarization of lasing and spontaneous edge emissions (anisotropic polarization emissions) above and below the lasing threshold from the AlGaN multiple-quantum-well (MQW) laser at 240.8 nm. The deep ultraviolet MQW emitted very weak or no surface emission (anisotropic polarization emission) below the threshold. On the other hand, the AlGaN multiple-quantum-well laser at 355.1 nm operated in the transverse-electric-field (TE) mode above the threshold, and homogeneous high-intensity spontaneous surface emission and both TE- and TM-mode edge emissions (isotropic emissions) were observed below the threshold.