Large-amplitude plasma wave generation with a high-intensity short-pulse beat wave

Walton, B.; Najmudin, Z.; Wei, M. S.; Marle, C.; Kingham, R. J.; Krushelnick, K.; Dangor, A. E.; Clarke, R. J.; Poulter, M. J.; Hernandez‐Gomez, C.; Hawkes, S.; Neely, D.; Collier, J.; Danson, C.; Fritzler, S.; Malka, Victor

doi:10.1364/ol.27.002203

Cited by 18 publications

(10 citation statements)

References 9 publications

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“…Thus far, the schemes studied for producing wakefields are the laser wakefield accelerator ͑LWFA͒, 8 the laser beat wave accelerator ͑LBWA͒, 11,12 the self-modulated laser wakefield accelerator ͑SM-LWFA͒, 5,13 and the forced laser wakefield ͑F-LWFA͒ ͑Ref. 14͒ accelerator.…”

Section: Self-modulated Laser Wakefield Accelerationmentioning

confidence: 99%

Laser plasma acceleration of electrons: Towards the production of monoenergetic beams

et al. 2005

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International audienceThe interaction of high intensity laser pulses with underdense plasma is investigated experimentally using a range of laser parameters and energetic electron production mechanisms are compared. It is clear that the physics of these interactions changes significantly depending not only on the interaction intensity but also on the laser pulse length. For high intensity laser interactions in the picosecond pulse duration regime the production of energetic electrons is highly correlated with the production of plasma waves. However as intensities are increased the peak electron acceleration increases beyond that which can be produced from single stage plasma wave acceleration and direct laser acceleration mechanisms must be invoked. If, alternatively, the pulse length is reduced such that it approaches the plasma period of a relativistic electron plasma wave, high power interactions can be shown to enable the generation of quasimonoenergetic beams of relativistic electrons

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Section: Self-modulated Laser Wakefield Accelerationmentioning

confidence: 99%

Laser plasma acceleration of electrons: Towards the production of monoenergetic beams

et al. 2005

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“…Using a 10 TW CPA Nd:glass laser beat, Walton et al generated a plasma wave with a beat wave period s beat of 700 fs. 26,27 However, they did not give the electron acceleration, which might have been because injection was not achieved with their experimental setup. Here, we show the acceleration of electrons by femtosecond laser beating by using a plate-gas hybrid target in which, via the forced plasma wave, cone-produced electrons from the plate are accelerated in the gas jet that is situated behind the plate.…”

Section: Discussionmentioning

confidence: 99%

Acceleration of cone-produced electrons by double-line Ti-sapphire laser beating

Mori

Kitagawa

2012

Physics of Plasmas

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Acceleration of electrons is demonstrated in a beat wave scheme by using a prepulse-free short-pulse (150 fs) double-line Ti-sapphire laser. To inject electrons, we used a hybrid target composed of a cone-drilled plate and a gas jet, where the cone-produced electrons were accelerated via the forced plasma wave excited in the gas jet that was situated behind the plate. This resulted in an increase in slope temperature from 0.05 to 0.15 MeV. We find a correlation between the slope temperature and forced relativistic plasma wave. The wake amplitude is 15 GV/m at the resonant density of 2:5 Â 10 18 cm À3 in a hydrogen plasma. The wake acceleration models can explain the increase in slope temperature.

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“…This corresponds to the development of (iii), a driving laser, to realize a practical plasma accelerator. Several beat wave lasers have been developed, such as the CO 2 laser [20][21][22], glass laser [23], and CPA glass laser [24]. They are operated in single-shot mode and are used mainly to reveal the physics of electron laser plasma acceleration.…”

Section: Introductionmentioning

confidence: 99%

Double-line terawatt OPCPA laser system for exciting beat wave oscillations

Mori

Kitagawa

2012

Appl. Phys. B

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A double-line terawatt beat laser (BEAT) is developed for exciting beat wave oscillations. BEAT consists of two oscillators and an amplification system including optical parametric chirped-pulse amplification (OPCPA) in which two individual pulses with wavelength separations of 10-35 nm are amplified, recompressed, and focused as a single beam. The recompressed pulse trace shows that a 150-fs pulse duration full width at half maximum was modulated at a beating period of 72 fs. This beating period matches a resonant excitation of plasma wave with an electron density of 2.5 9 10 18 cm -3 , resulting in excitation of a beat wave in hydrogen plasma with wave amplitude of 15 GV/m. The multiple beating oscillations can amplify the plasma wave and improve its structure. This scheme would be ideal for stabilizing the plasma wave strength in the plasma cavity and for realizing a practical laser plasma accelerator.

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Large-amplitude plasma wave generation with a high-intensity short-pulse beat wave

Cited by 18 publications

References 9 publications

Laser plasma acceleration of electrons: Towards the production of monoenergetic beams

Laser plasma acceleration of electrons: Towards the production of monoenergetic beams

Acceleration of cone-produced electrons by double-line Ti-sapphire laser beating

Double-line terawatt OPCPA laser system for exciting beat wave oscillations

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