High Q-factor controllable phononic modes in hybrid phononic–dielectric structures

作     者：Bo Qiang Alexander M.Dubrovkin Harish N.S.Krishnamoorthy Qian Wang Cesare Soci Ying Zhang Jinghua Teng Qi Jie Wang 

作者机构：Nanyang Technological UniversityCentre for Disruptive Photonic TechnologiesThe Photonic InstituteSchool of Physical and Mathematical SciencesSingapore Nanyang Technological UniversityCentre for OptoElectronics and BiophotonicsSchool of Electrical and Electronic EngineeringSingapore Agency for ScienceTechnology and ResearchInstitute of Materials Research and EngineeringSingapore Agency for ScienceTechnology and ResearchInstitute of Manufacturing TechnologySingapore 

出 版 物：《Advanced Photonics》 (先进光子学（英文）)

年 卷 期：2019年第1卷第2期

页      面：41-45页

核心收录：

学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0806[工学-冶金工程] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：This work was supported by funding from the Ministry of Education,Singapore(Grant Nos.MOE2016-T2-2-159,MOE2016-T2-1-128,MOE2015-T2-2-007,and MOE Tier 1 RG164/15) the National Research Foundation,Competitive Research Program(No.NRF-CRP18-2017-02) NSFC(No.61704082) A.D.acknowledges funding support from the Singapore Ministry of Education Academic Research Funds Tier 3 under Grant No.MOE2016-T3-1-006(S) 

主　　题：hybrid resonance high Q-factor phonon resonance mode splitting 

摘      要：Phonon polariton resonances in the mid-infrared spectral range demonstrate properties superior to noble metal-based plasmonics,owing to smaller dissipative loss and better field ***,a conventional way to excite the localized phonon resonance involves ion etching,which reduces the attainable quality factors(Q-factors)of the *** show that by introducing a deep subwavelength layer of dielectric gratings on a phononic substrate,localized dipolar resonance and higher order modes with high Q-factors 96 and 195,respectively,can be *** further demonstrate,via experiments and simulations,that the resonant wavelength and field confinement can be controlled by coupling the localized hybrid mode with propagating surface *** also observed for the first time the coupling between a localized dipolar mode and a propagating higher-order surface phonon-polariton *** results will be useful in designing on-chip,low-loss,and highly integrated phononic devices in the infrared spectral domain.