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Enhanced laser wakefield by beating of two co-propagating Gaussian laser pulses

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Abstract

Recently, co-propagating two-color laser pulses have been extensively used to study the attosecond pulse generation, for controlling the electron motion at femtosecond and attosecond time scales, for high harmonic generation in solids and gases, etc. In this paper, we have studied the co-propagational effect of two Gaussian laser pulses of different pulse length and frequency (\({\upomega }_{1}\approx 2{\upomega }_{p}\) and \({\upomega }_{2}\approx {\upomega }_{p}\)) through under-dense plasma. Plasma density satisfies the condition of beating to generate maximum wakefield, i.e., the difference of frequency is equal to the frequency of first pulse and equal to plasma frequency \({(\upomega }_{1}-{\upomega }_{2}\approx {\upomega }_{p})\) also. Longitudinal force on electron and laser wakefield developed in plasma are studied analytically. Under the above-stated conditions, approximately 6 times stronger longitudinal force is experienced by the electrons as compared to individual single pulse. An enhanced laser wakefield has also been observed. This study is carried out for optimizing the parameters of lasers and plasma medium to maximize the electron energy gain.

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The data that support the findings of this study are available from the corresponding authors upon reasonable request.

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Authors and Affiliations

  1. Department of Physics, Lovely Professional University, G.T. Road, Phagwara, Punjab, India

    Vivek Sharma & Vishal Thakur

  2. Department of Physics, Manav Rachna University, Faridabad, Haryana, India

    Sandeep Kumar

  3. Department of Physics, University of Allahabad, Uttar Pradesh, Allahabad, India

    Niti Kant

Authors
  1. Vivek Sharma
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  2. Sandeep Kumar
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  3. Niti Kant
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  4. Vishal Thakur
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VS: derivation, methodology, analytical modeling and graph plotting; SK: numerical analysis; NK: numerical analysis and result discussion; VT: supervision, reviewing and editing.

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Correspondence to Vishal Thakur.

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Sharma, V., Kumar, S., Kant, N. et al. Enhanced laser wakefield by beating of two co-propagating Gaussian laser pulses. J Opt 53, 1137–1143 (2024). https://doi.org/10.1007/s12596-023-01250-6

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  • DOI: https://doi.org/10.1007/s12596-023-01250-6

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