银/钯纳米复合材料中的飞秒圆偏振光子拖曳效应

Femtosecond Circular Photon Drag Effect in the Ag/Pd Nanocomposite.

作者信息

Mikheev Gennady M, Saushin Aleksandr S, Vanyukov Viatcheslav V, Mikheev Konstantin G, Svirko Yuri P

机构信息

Institute of Mechanics UB RAS, Izhevsk, Russia, 426067.

Institute of Photonics, University of Eastern Finland, 80101, Joensuu, Finland.

出版信息

Nanoscale Res Lett. 2017 Dec;12(1):39. doi: 10.1186/s11671-016-1771-4. Epub 2017 Jan 13.

DOI:10.1186/s11671-016-1771-4

PMID:28091951

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5236051/

Abstract

We report on the observation of the helicity-dependent photoresponse of the 20-μm-thick silver-palladium (Ag/Pd) nanocomposite films. In the experiment, 120 fs pulses of Ti:S laser induced in the film an electric current perpendicular to the incidence plane. The photoinduced current is a linear function of the incident beam power, and its sign depends on the beam polarization and angle of incidence. In particular, the current is zero for the p- and s-polarized beams, while its sign is opposite for the right- and left-circularly polarized beams. By comparing experimental results with theoretical analysis, we show that the photoresponse of the Ag/Pd nanocomposite originates from the photon drag effect.

摘要

我们报告了对厚度为20μm的银钯（Ag/Pd）纳米复合薄膜的螺旋度相关光响应的观察结果。在实验中，钛宝石（Ti:S）激光的120飞秒脉冲在薄膜中感应出垂直于入射平面的电流。光致电流是入射光束功率的线性函数，其正负取决于光束偏振和入射角。特别地，对于p偏振和s偏振光束，电流为零，而对于右旋和左旋圆偏振光束，其正负相反。通过将实验结果与理论分析相比较，我们表明Ag/Pd纳米复合材料的光响应源自光子拖曳效应。