# Spectral control of high harmonics from relativistic plasmas using bicircular fields.

@article{Chen2018SpectralCO, title={Spectral control of high harmonics from relativistic plasmas using bicircular fields.}, author={Zi-Yu Chen}, journal={Physical review. E}, year={2018}, volume={97 4-1}, pages={ 043202 } }

We introduce two-color counterrotating circularly polarized laser fields as a way to spectrally control high harmonic generation (HHG) from relativistic plasma mirrors. Through particle-in-cell simulations, we show that only a selected group of harmonic orders can appear owing to the symmetry of the laser fields and the related conservation laws. By adjusting the intensity ratio of the two driving field components, we demonstrate the overall HHG efficiency, the relative intensity of allowed…

## 15 Citations

### High-order vortex harmonics generation by bi-circular Laguerre-Gaussian laser fields with relativistic plasmas

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In this article, we set up a theoretical model to investigate the physical mechanism of circularly polarized (CP) high-harmonic generation (HHG) by two-color relativistic driving lasers (with one at…

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### Control of the helicity of high-order harmonics generated by bicircular laser fields

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High-order harmonics generated by bicircular laser field have helicities which alternate between $+1$ and $-1$. In order to generate circularly polarized high-harmonic pulses, which are important for…

### Circularly-Polarized Harmonic Generation in Underdense Plasma Using Bi-Color Lasers

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- 2020

We have modeled bi-color circularly polarized harmonic generation in under-dense plasmas using a combination of PIC simulation and a nonlinear fluid model. Generalized selection rules and helicities,…

### Attosecond pulse trains with elliptical polarization from an orthogonally polarized two-color field

- PhysicsJournal of the Optical Society of America B
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Generation of an elliptically polarized attosecond pulse train by an orthogonally polarized two-color (OTC) laser field is investigated theoretically and simulated numerically. The OTC field consists…

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