The hole burning phenomenon is investigated in a five-level atomic configuration at the interface of cesium and gold in the presence of Doppler broadening. The group index and refractive index of surface plasmon polaritons (SPPs) becomes equal in the hole burning region, which display that the phase and group velocities of SPPs are matched. The propagation length during absorption of SPPs decreases with the decrease of absorption, while there are increases with amplification of SPPs. This study could have significant applications in optical storage devices, telecommunication, imaging, and enhancement of plasmonster memory.

中文翻译：

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通过多普勒展宽进行表面等离子体激元孔燃烧

在存在多普勒展宽的情况下，在铯和金的界面上以五级原子构型研究了空穴燃烧现象。在烧孔区域中，表面等离子体激元（SPPs）的基团指数和折射率变得相等，这表明SPP的相速度和基团速度是匹配的。SPP吸收过程中的传播长度随吸收率的降低而减小，而随SPP的扩增而增加。这项研究可能在光存储设备，电信，成像和等离激元存储器的增强方面具有重要的应用。