Xu Huiwen, Hurtado Antonio, Wright Jeremy B, Li Changyi, Liu Sheng, Figiel Jeffrey J, Luk Ting-Shan, Brueck Steven R J, Brener Igal, Balakrishnan Ganesh, Li Qiming, Wang George T
Opt Express. 2014 Aug 11;22(16):19198-203. doi: 10.1364/OE.22.019198.
We demonstrate polarization control in optically-pumped single GaN nanowire lasers fabricated by a top-down method. By placing the GaN nanowires onto gold substrates, the naturally occurring randomly orientated elliptical polarization of nanowire lasers is converted to a linear polarization that is oriented parallel to the substrate surface. Confirmed by simulation results, this polarization control is attributed to a polarization-dependent loss induced by the gold substrate, which breaks the mode degeneracy of the nanowire and forms two orthogonally polarized modes with largely different cavity losses.
我们展示了通过自上而下方法制造的光泵浦单根氮化镓纳米线激光器中的偏振控制。通过将氮化镓纳米线放置在金衬底上，纳米线激光器自然产生的随机取向椭圆偏振被转换为与衬底表面平行取向的线偏振。模拟结果证实，这种偏振控制归因于金衬底引起的偏振相关损耗，它打破了纳米线的模式简并，形成了两个具有大不相同腔损耗的正交偏振模式。
