当前位置: X-MOL 学术Nat. Photon. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Symmetry-breaking-induced nonlinear optics at a microcavity surface
Nature Photonics ( IF 32.3 ) Pub Date : 2018-11-19 , DOI: 10.1038/s41566-018-0297-y
Xueyue Zhang , Qi-Tao Cao , Zhuo Wang , Yu-xi Liu , Cheng-Wei Qiu , Lan Yang , Qihuang Gong , Yun-Feng Xiao

Second-order nonlinear optical processes lie at the heart of many applications in both classical and quantum regimes1,2,3. Inversion symmetry, however, rules out the second-order nonlinear electric-dipole response1,4,5 in materials widely adopted in integrated photonics (for example, SiO2, Si and Si3N4). Here, we report nonlinear optics induced by symmetry breaking6,7,8,9,10 at the surface of an ultrahigh-Q silica microcavity under a sub-milliwatt continuous-wave pump. By dynamically coordinating the double-resonance phase matching, a second harmonic is achieved with an unprecedented conversion efficiency of 0.049% W−1, 14 orders of magnitude higher than that of the non-enhancement case11. In addition, the nonlinear effect from the intrinsic symmetry breaking at the surface8,12 can be identified unambiguously, with guided control of the pump polarization and the recognition of the second-harmonic mode distribution. This work not only extends the emission frequency range of silica photonic devices, but also lays the groundwork for applications in ultra-sensitive surface analysis.



中文翻译:

微腔表面处对称破坏引起的非线性光学

二阶非线性光学过程是经典和量子体系1,2,3的许多应用的核心。但是,反演对称性排除了集成光子学中广泛采用的材料(例如SiO 2,Si和Si 3 N 4)中的二阶非线性电偶极子响应1,4,5。在这里,我们报道了在亚毫瓦连续波泵的作用下,在超高Q石英微腔表面对称性破坏6,7,8,9,10引起的非线性光学。通过动态协调双谐振相位匹配,以0.049%W -1的空前转换效率实现了二次谐波比非增强情况11高14个数量级。另外,在泵浦极化的引导控制和二次谐波模式分布的识别下,可以明确地识别出在表面8,12处固有的对称性破坏引起的非线性效应。这项工作不仅扩展了二氧化硅光子器件的发射频率范围,而且为超灵敏表面分析的应用奠定了基础。

更新日期:2018-12-10
down
wechat
bug