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Ultralong propagation of a surface plasmon polariton wave within an ultrawide bandwidth via phase-sensitive optical parametric amplification

机译:通过相敏光学参数放大的超宽度带宽内的表面等离子体POLATITON波的超轻传播

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The propagation length enhancement of surface plasmon polariton (SPP) waves could lead to practical applications. This Letter proposes the numerically verified phase-sensitive nonlinear. chi((2))-based optical parametric amplification (OPA) for ultralong propagation of a SPP wave within an ultrawide bandwidth. The strong nonlinear interaction between the SPP mode and the hybrid guided mode, which limits the length enhancement, is mitigated in a silver-coated linearly chirped periodically poled lithium niobate planar waveguide via slowly phase-matched OPA. Obtained results indicate an ultralong propagation length for a SPP mode of about 4 cm when a 135 MW/cm pump intensity is launched. The acceptance bandwidth of the amplified SPP shows its dependency on the pump intensity; for a pump intensity range between 70 and 135 MW/cm, the acceptance bandwidth is still ultrawide, varying from 28 to 18 nm, respectively. (C) 2017 Optical Society of America
机译:表面等离子体Polariton(SPP)波的传播长度增强可能导致实际应用。 这封信提出了数值验证的相敏 - 非线性。 基于CHI((2))的光学参数放大(OPA),用于超广开带宽内的SPP波的超轻传播。 通过缓慢相位匹配的OPA在银涂覆的线性啁啾周期性抛光平面波导中减轻了SPP模式和混合引导模式之间的强非线性相互作用。 当启动135mM / cm泵强度时,获得的结果表明,当启动135MW / cm泵强度时,对于约4cm的SPP模式的超声传播长度。 扩增的SPP的验收带宽显示其对泵强度的依赖性; 对于泵强度范围为70至135 mW / cm,接受带宽仍然是超空的,分别从28到18 nm变化。 (c)2017年光学学会

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