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Revisiting the Photon-Drag Effect in Metal Films.

ABSTRACT: The photon-drag effect, the rectified current in a medium induced by conservation of momentum of absorbed or redirected light, is a unique probe of the detailed mechanisms underlying radiation pressure. We revisit this effect in gold, a canonical Drude metal. We discover that the signal for p-polarized illumination in ambient air is affected in both sign and magnitude by adsorbed molecules, opening previous measurements for reinterpretation. Further, we show that the intrinsic sign of the photon-drag effect is contrary to the prevailing intuitive model of direct momentum transfer to free electrons.

SUBMITTER: Strait JH

PROVIDER: S-EPMC6767616 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Revisiting the Photon-Drag Effect in Metal Films.

Strait Jared H JH Holland Glenn G Zhu Wenqi W Zhang Cheng C Ilic Bojan R BR Agrawal Amit A Pacifici Domenico D Lezec Henri J HJ

Physical review letters 20190801 5

The photon-drag effect, the rectified current in a medium induced by conservation of momentum of absorbed or redirected light, is a unique probe of the detailed mechanisms underlying radiation pressure. We revisit this effect in gold, a canonical Drude metal. We discover that the signal for p-polarized illumination in ambient air is affected in both sign and magnitude by adsorbed molecules, opening previous measurements for reinterpretation. Further, we show that the intrinsic sign of the photon ...[more]

PMID: 31491313

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