论文标题
用GAN/Algan量子井中的Algan Mirlow旋光灯激光
Polariton lasing in AlGaN microring with GaN/AlGaN quantum wells
论文作者
论文摘要
微腔极化子是强烈相互作用的杂化光 - 晶格，这对于开发新型光源和活性光子设备是有希望的。在这里，我们报告了基于gan/algan平板波导的微孔谐振器中的紫外线光谱范围，实验从4 K到室温进行。观察到刺激的极化子松弛到多个环的谐振器模式中，这些模式表现出阈值与脉冲能量的阈值样相关性。强烈的激子 - 光子耦合方案通过能量和脉冲能量增加的激子样模式的自由光谱范围的显着降低来证实。重要的是，激子的发射没有能力扩大，进一步证实了在莫特过渡以下的电子孔密度下观察到激光。总体而言，我们的工作铺平了基于高速平板波导极性几何形状直至室温的高速紫外线设备开发的道路，并有可能集成到复杂的光子电路中。
Microcavity polaritons are strongly interacting hybrid light-matter quasiparticles, which are promising for the development of novel light sources and active photonic devices. Here, we report polariton lasing in the UV spectral range in microring resonators based on GaN/AlGaN slab waveguides, with experiments carried out from 4 K up to room temperature. Stimulated polariton relaxation into multiple ring resonator modes is observed, which exhibit threshold-like dependence of the emission intensity with pulse energy. The strong exciton-photon coupling regime is confirmed by the significant reduction of the free spectral range with energy and the blueshift of the exciton-like modes with increasing pulse energy. Importantly, the exciton emission shows no broadening with power, further confirming that lasing is observed at electron-hole densities well below the Mott transition. Overall, our work paves the way towards development of novel UV devices based on the high-speed slab waveguide polariton geometry operating up to room temperature with potential to be integrated into complex photonic circuits.
