谷歌浏览器插件
订阅小程序
在清言上使用

High-harmonic generation from a subwavelength dielectric resonator

Anastasiia Zalogina, Luca Carletti, Anton Rudenko, Jerome Moloney, Aditya Tripathi, Hoo-Cheol Lee, Ilya Shadrivov, Hong-Gyu Park, Yuri Kivshar, Sergey S. Kruk

Science Advances(2023)

引用 3|浏览52
暂无评分
摘要
Higher-order optical harmonics entered the realm of nanostructured solids being observed recently in optical gratings and metasurfaces with a subwavelength thickness. Structuring materials at the subwavelength scale allows us toresonantly enhance the efficiency of nonlinear processes and reduce the size of high-harmonic sources. We report the observation of up to a seventh harmonic generated from a single subwavelength reso-nator made of AlGaAs material. This process is enabled by careful engineering of the resonator geometry for supporting an optical mode associated with a quasi-bound state in the continuum in the mid-infrared spectral range at around lambda = 3.7 mu m pump wavelength. The resonator volume measures similar to 0.1 lambda 3. The resonant modes are excited with an azimuthally polarized tightly focused beam. We evaluate the contributions of perturbative and nonperturbative nonlinearities to the harmonic generation process. Our work proves the possibility to minia-turize solid-state sources of high harmonics to the subwavelength volumes.
更多
查看译文
关键词
subwavelength,high-harmonic
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要