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 polari...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.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11004026,11174051,51271057,51071045 and 11074034the Program for New Century Excellent Talents in University of Ministry of Education of China(No NCET-11-0096)+1 种基金the Natural Science Fund of Jiangsu Province(No BK2012757)the National Basic Research Program of China under Grant No 2010CB923404.
文摘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.
