论文标题
自我诱导的激光脉冲衰减成一对表面等离子体
Self-Induced Decay of Intense Laser Pulse into a Pair of Surface Plasmons
论文作者
论文摘要
从理论上讲，我们表明，通常在金属表面上的强烈飞秒的光秒脉冲倾向于腐烂成一对反向传播的表面等离子体 - 核酸杆菌（SPPS）。干扰场定期加热培养基，这会引起周期性介电常数的扰动，并共同扩大了SPP的大小。在破坏激光器的典型金属中，不稳定性生长时间仅为10-50 fs。这种机制是可以解释单脉冲泵送制度中激光诱导的周期性表面结构形成的。
We show theoretically that an intense femtosecond optical pulse incident normally on a metal surface tends to decay into a pair of counter-propagating surface plasmon-polaritons (SPPs). The interference field heats the medium periodically, which causes a periodic permittivity perturbation and resonantly amplifies the magnitudes of SPPs. The instability growth time is only 10-50 fs for typical metals at damaging laser fluences. This mechanism is promising for the interpretation of laser-induced periodic surface structures formation in a single-pulse pumping regime.
