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Terahertz Generation by Beating Laser Driven Plasmons in Graphene Embedded Metal Film

Author

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  • Jetendra Parashar

    (Samrat Ashok Technological Institute, India)

  • Swati Saxena

    (Samrat Ashok Technological Institute, India)

Abstract

A modified ATR configuration, comprising a glass prism embedded by metal film and graphene, is proposed as a suitable nonlinear medium for laser beat wave terahertz generation. Two lasers, launched on the prism at SPR (surface plasmon resonance) angle, get linearly mode converted into surface plasma waves (SPWs) of much higher amplitude. The SPWs exert a beat frequency ponderomotive force on free electrons of metal film and graphene. The ensued nonlinear current drives beat frequency THz plasmons. A surface ripple on graphene or metal assists phase matching and resonantly enhances the THz field amplitude.

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Handle: RePEc:epw:physic:v:5:y:2023:i:4:id:11258
DOI: 10.24018/ejphysics.2023.5.4.258
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