We demonstrate a simple, low-cost, and ultracompact chiral resonant metasurface design, which, by strong local coupling to a quantum gain medium (quantum emitters), allows to implement an ultrathin metasurface laser, capable of generating tunable circularly polarized coherent lasing output. According to our detailed numerical investigations, the lasing emission can be transformed from linear to circular and switch from right- to left-handed circularly polarized (CP) not only by altering the metasurface chiral response but also by changing the polarization of a linearly polarized pump wave, thus enabling dynamic lasing-polarization control. Given the increasing interest for CP laser emission, our chiral metasurface laser design proves to be a versatile yet straightforward strategy to generate a strong and tailored CP emission laser, promising great potential for future applications in both photonics and materials science.

中文翻译：

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由共振手性超表面实现的超薄、动态可控圆偏振发射激光器


我们展示了一种简单、低成本和超紧凑的手性谐振超表面设计，通过与量子增益介质（量子发射器）的强局部耦合，允许实现超薄超表面激光器，能够产生可调谐的圆偏振相干激光输出。根据我们详细的数值研究，激光发射可以从线性转换为圆形，并从右旋圆极化 （CP） 切换到左旋圆极化 （CP），不仅可以改变超表面手性响应，还可以通过改变线性极化泵浦波的极化，从而实现动态激光极化控制。鉴于人们对 CP 激光发射的兴趣日益浓厚，我们的手性超表面激光器设计被证明是一种多功能而简单的策略，可以产生强大且量身定制的 CP 发射激光器，在光子学和材料科学的未来应用中具有巨大潜力。