Terahertz radiation generation by nonlinear mixing of two laser beams over a thin foil

Chauhan, Santosh; Parashar, J.

doi:10.1063/1.4926688

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Sharma and Vijay [16] studied the THz generation by two collinear laser beams over an anharmonic carbon nanotube with power conversion efficiency up to the order of 10 6 . Chauhan and Parashar [17] reported the excitation of THz SPWs over thin films by nonlinear mixing of two laser beams. Jatav and Parasher [18] investigated analytically the excitation of SHG by nonlinear mixing of two crossed SPWs which propagate to each other at angle θ on the metal-air interface.…”

Section: Introductionmentioning

confidence: 99%

Excitation of terahertz surface magnetoplasmons by nonlinear mixing of laser and its second harmonic on a rippled surface of n type semiconductor

Srivastav

Panwar²

2022

Opt Quant Electron

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We investigated the excitation of terahertz (THz) surface magneto plasmons (SMPs) by nonlinear mixing of laser and its frequency shifted second harmonic on a rippled surface of n-type semiconductor-free space interface. Obliquely incident p-polarized lasers exert a nonlinear ponderomotive force on free electrons of n-type semiconductor. Nonlinear ponderomotive force induce the oscillatory velocities at frequencies 2ω1 and (ω1 − ω2). These oscillatory velocities beat the modulated electron density nq to get the charge density perturbation at (2ω1, 2k1z + q) and (ω1 − ω2, k1z − k2z + q). Perturbed charge density couples with the linear oscillatory velocities to produce a nonlinear current density, which resonantly derives THz SMPs at frequency ω = 2ω1 − ω2 and propagation constant kz = 2k1z − k2z + q. Here, q provides the extra wave number for the phase matching condition. The efficiency of THz SMPs wave attained up to 9% and amplitude of THz SMPs controlled by the electron cyclotron frequency ωce and incident angle θ.

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Section: Introductionmentioning

confidence: 99%

Excitation of terahertz surface magnetoplasmons by nonlinear mixing of laser and its second harmonic on a rippled surface of n type semiconductor

Srivastav

Panwar²

2022

Opt Quant Electron

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Excitation of terahertz surfacemagnetoplasmons by nonlinear mixing of laser and its second harmonic on a rippled surface of n type semiconductor

Srivas

Panwar

2022

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We investigated the excitation of terahertz (THz) surface magneto plasmons(SMPs) by nonlinear mixing of laser and its frequency shiftedsecond harmonic on a rippled surface of n-type semiconductor-free spaceinterface. Obliquely incident p-polarized lasers exert a nonlinear ponderomotiveforce on free electrons of n-type semiconductor. Nonlinearponderomotive force induce the oscillatory velocities at frequencies 2ω1and (ω1 −ω2). These oscillatory velocities beat the modulated electrondensity nq to get the charge density perturbation at (2ω1, 2k1z + q)and (ω1 − ω2, k1z − k2z + q). Perturbed charge density couples withthe linear oscillatory velocities to produce a nonlinear current density,which resonantly derives THz SMPs at frequency ω = 2ω1 − ω2 andpropagation constant kz = 2k1z − k2z + q. Here, q provides theextra wave number for the phase matching condition. The efficiencyof THz SMPs wave attained up to 9% and amplitude of THz SMPscontrolled by the electron cyclotron frequency ωce and incident angle θ.

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Terahertz radiation generation by nonlinear mixing of two laser beams over a thin foil

Cited by 2 publications

References 16 publications

Excitation of terahertz surface magnetoplasmons by nonlinear mixing of laser and its second harmonic on a rippled surface of n type semiconductor

Excitation of terahertz surface magnetoplasmons by nonlinear mixing of laser and its second harmonic on a rippled surface of n type semiconductor

Excitation of terahertz surfacemagnetoplasmons by nonlinear mixing of laser and its second harmonic on a rippled surface of n type semiconductor

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