Acousto-optic interactions for terahertz waves using phoxonic quasicrystals
Acousto-optic interactions for terahertz waves using phoxonic quasicrystals
复制标题
使用磷声准晶体的太赫兹波声光相互作用
DOI:
10.1088/1361-6463/aaa98c
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发表时间:
2018-03
期刊:
影响因子:
--
通讯作者:
Liao Qinghua
中科院分区:
文献类型:
--
作者:
Wang Zhong;Yu Tianbao;Wang Tongbiao;Liu Wenxing;Liu Nianhua;Liao Qinghua
Phoxonic quasicrystals possess abundant localized modes and low-index-contrast bandgaps, thus showing much advantage over periodic counterparts. We calculated the modulation of photonic modes for terahertz waves by phononic modes in defect-free phoxonic quasicrystals (FDQs) and quasicrystals having center point defects (PDQs). Both the moving interface (MI) and photoelastic effects are considered in acousto-optic coupling. Terahertz modes can be efficiently modified by acoustic modes due to the simultaneous confinement of electromagnetic and elastic fields both inside and outside the bandgaps. The acousto-optic coupling strength depends on the selection of the acoustic and terahertz defect modes. The predominant coupling mechanism is determined by the overlapping between the terahertz and acoustic modes in PDQs, while the MI effect becomes predominant in FDQs. Our results are important for terahertz wave modulation with ultra-small footprint size.
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影响因子:
3.8
作者:
M. Skorobogatiy;G. Bégin;A. Talneau
通讯作者:
M. Skorobogatiy;G. Bégin;A. Talneau
影响因子:
3.7
作者:
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影响因子:
3.2
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通讯作者:
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影响因子:
3.2
作者:
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通讯作者:
Tzy-Rong Lin;Chiang-Hsin Lin;J. Hsu
影响因子:
8.6
作者:
YABLONOVITCH, E
通讯作者:
YABLONOVITCH, E