Polarization of terahertz emission out of incident plane from laser interactions with solid targets

The first experimental measurements of intense (∼7 × 10 19 W cm −2 ) laser-driven terahertz (THz) radiation from a solid target which is preheated by an intense pulse of laser-accelerated protons is reported. The total energy of the THz radiation is found to decrease by approximately a factor of 2 compared to a cold target reference. This is attributed to an increase in the scale length of the preformed plasma, driven by proton heating, at the front surface of the target, where the THz radiation is generated. The results show the importance of controlling the preplasma scale length for THz production.

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Effects of target pre-heating and expansion on terahertz radiation production from intense laser-solid interactions

Yuan

Fang

Carroll

et al. 2014

High Pow Laser Sci Eng

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High power terahertz pulses generated in intense laser—plasma interactions

Li¹,

Wang²,

Li³

et al. 2012

Chinese Phys. B

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Terahertz (THz) radiation has attracted much attention due to its wide potential applications. Though radiation can be generated with various ways, it is still a big challenge to obtain strong tabletop sources. Plasma, with the advantage of no damage limit, is a promising medium to generate strong THz radiation. This review reports recent advances on strong THz radiation generation from low-density gases and high-density solid targets at different laser intensities.

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Polarization of terahertz emission out of incident plane from laser interactions with solid targets

Cited by 2 publications

References 22 publications

Effects of target pre-heating and expansion on terahertz radiation production from intense laser-solid interactions

Effects of target pre-heating and expansion on terahertz radiation production from intense laser-solid interactions

High power terahertz pulses generated in intense laser—plasma interactions

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