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Second harmonic generation of cosh-Gaussian laser beam in magnetized plasma

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Abstract

In the present paper, second harmonic generation (SHG) of cosh-Gaussian laser in a magnetized plasma is analyzed. During laser propagation through plasma, electrons acquire the oscillatory velocity and result density perturbation. The density oscillations beat with the oscillatory velocity to produce second harmonic current which drives SHG. Wiggler magnetic field adds the additional momentum to the photons of second harmonic and fulfills the phase matching condition which results in resonant SHG. Wiggler magnetic field also helps to maintain the cyclotron frequency due to which plasma electrons remain confined within the plasma region and results SHG of higher efficiency. Using paraxial approximation, we have derived the equation for the amplitude of SHG and studied its variation for different values of intensity parameter of incident laser, wiggler magnetic field, decentered parameter and plasma density. The efficiency of SHG is significant at higher values of intensity of incident laser, wiggler field, and plasma density as observed in our analysis.

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Acknowledgements

This work is supported by the TARE Scheme (Grant No. TAR/2018/000916) of SERB, DST, New Delhi, India.

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Authors and Affiliations

  1. Department of Physics, Lovely Professional University, G.T. Road, Phagwara, Punjab, 144411, India

    Vinay Sharma, Vishal Thakur & Niti Kant

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  1. Vinay Sharma
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  2. Vishal Thakur
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  3. Niti Kant
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Correspondence to Niti Kant.

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Sharma, V., Thakur, V. & Kant, N. Second harmonic generation of cosh-Gaussian laser beam in magnetized plasma. Opt Quant Electron 52, 444 (2020). https://doi.org/10.1007/s11082-020-02559-3

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