Low-Threshold Surface Plasmon Lasing using the Band Edge Mode in a Bi-Periodic Groove Array
LI Jia-Qi, DONG Zheng-Gao** , QIU Teng, ZHAI Ya
Department of Physics, Southeast University, Nanjing 211189
Abstract ：We study surface plasmon lasing based on periodic and bi-periodic groove arrays etched on a silver substrate. It is interesting to find that the bi-periodic structure can open a clear band gap of surface plasmon polaritons near the first Brillouin zone boundary, and thus it is promising to utilize the band edge modes of surface plasmon polaritons. A low threshold for the surface plasmon lasing effect is demonstrated numerically, owing to the low group velocity of the band edge mode, which provides a feasible way to design surface plasmon lasers.
收稿日期: 2013-04-03
出版日期: 2013-11-21
:
78.67.Pt
(Multilayers; superlattices; photonic structures; metamaterials)
42.70.Qs
(Photonic bandgap materials)
42.60.Lh
(Efficiency, stability, gain, and other operational parameters)
42.50.Gy
(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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2013, Vol. 30 
