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Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons
นักวิจัย : Romanato, Filippo , Lee, Kwang Hong , Kang, Husen Kartasasmita , Wong, Chee Cheong , Zong, Yun , Wolfgang, Knoll
คำค้น : DRNTU::Engineering::Materials::Plasma treatment.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2551
อ้างอิง : Romanato, F., Lee, K. H., Kang, H. K., Wong, C. C., Zong, Y. & Wolfgang, K. (2008). Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons. Physical Review B: Condensed Matter and Materials Physics, (77), 245435, 1-7. , 1098-0121 , http://hdl.handle.net/10220/6203 , http://dx.doi.org/10.1103/PhysRevB.77.245435 , 134413
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical review B : condensed matter and materials physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The excitation conditions for surface plasmon polaritons (SPPs) on a silver-gold bilayer coated sinusoidal grating can be varied over a wide range by tuning the azimuthal grating orientation (α). Grating coupling induces rotation of the SPP wave vector which, for specific conditions, can be directed perpendicular to the exciting light direction. Certain α orientations allow the excitation of two SPPs with the same frequency but different propagation directions. Other azimuthal orientations allow excitation of many SPP modes characterized by propagation over a large angular range. The kinematics of SPP propagation can be described by a model based on the wave-vector conservation law. Using this model, SPP dispersion relation, propagation direction, and mode density have been computed and shown to be in agreement with experimental measurements. The wave-vector dispersion is characterized by an energy threshold for the SPP excitation that increases as α increases. The angular spread is accompanied by an energy condensation of the SPP modes in correspondence to the energy threshold.

บรรณานุกรม :
Romanato, Filippo , Lee, Kwang Hong , Kang, Husen Kartasasmita , Wong, Chee Cheong , Zong, Yun , Wolfgang, Knoll . (2551). Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Romanato, Filippo , Lee, Kwang Hong , Kang, Husen Kartasasmita , Wong, Chee Cheong , Zong, Yun , Wolfgang, Knoll . 2551. "Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Romanato, Filippo , Lee, Kwang Hong , Kang, Husen Kartasasmita , Wong, Chee Cheong , Zong, Yun , Wolfgang, Knoll . "Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2551. Print.
Romanato, Filippo , Lee, Kwang Hong , Kang, Husen Kartasasmita , Wong, Chee Cheong , Zong, Yun , Wolfgang, Knoll . Azimuthal dispersion and energy mode condensation of grating-coupled surface plasmon polaritons. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2551.