| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Producing High Intense Attosecond Pulse Train by Interaction of Three-Color Pulse and Overdense Plasma |
| M. Salehi, S. Mirzanejad** |
Department of Atomic and Molecular Physics, University of Mazandaran, Babolsar 47415-416, Iran
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| Cite this article: |
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M. Salehi, S. Mirzanejad 2017 Chin. Phys. Lett. 34 054202 |
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Abstract Amplifying the attosecond pulse by the chirp pulse amplification method is impossible. Furthermore, the intensity of attosecond pulse is low in the interaction of laser pulse and underdense plasma. This motivates us to propose using a multi-color pulse to produce the high intense attosecond pulse. In the present study, the relativistic interaction of a three-color linearly-polarized laser-pulse with highly overdense plasma is studied. We show that the combination of $\omega_{1}$, $\omega_{2}$ and $\omega_{3}$ frequencies decreases the instance full width at half maximum reflected attosecond pulse train from the overdense plasma surface. Moreover, we show that the three-color pulse increases the intensity of generated harmonics, which is explained by the relativistic oscillating mirror model. The obtained results demonstrate that if the three-color laser pulse interacts with overdense plasma, it will enhance two orders of magnitude of intensity of ultra short attosecond pulses in comparison with monochromatic pulse.
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Received: 12 January 2017
Published: 29 April 2017
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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52.38.-r
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(Laser-plasma interactions)
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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