Laser wakefield accelerator and method for generating high-brightness attosecond light pulses

A laser wakefield and accelerator technology, applied in DC voltage accelerators, electrical components, accelerators, etc., can solve problems such as high laser contrast, unfavorable high repetition rate, and difficult experiments, and achieve high radiation quality and low technical requirements , low cost effect

Inactive Publication Date: 2016-08-17
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this scheme requires extremely high laser contrast, and the experiment is extremely difficult.
In addition, these schemes based on solid targets are not conducive to high repetition rate operation, which has great limitations in practical applications

Method used

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  • Laser wakefield accelerator and method for generating high-brightness attosecond light pulses
  • Laser wakefield accelerator and method for generating high-brightness attosecond light pulses
  • Laser wakefield accelerator and method for generating high-brightness attosecond light pulses

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Embodiment

[0085] The laser wake field accelerator of this embodiment is based on the above-mentioned first implementation mode (see figure 1 ), including laser beam splitting and guiding devices, gas generating devices and gas density distribution shaping devices.

[0086] In this embodiment, the gas ejected from the gas nozzle J1 is hydrogen, and the total electron density contained in the gas molecules is up to 4.7×10 19 per cubic centimeter.

[0087] The light intensity spatial modulation mask SM1 has a side of a single hole, and the line width of the single hole is 100 microns. After being further modulated by the cylindrical prisms M6 and M7, the line width of the high-intensity area of ​​the processing laser L4 is about 100 microns, and the light intensity is about 10 14 -10 16 watts per square centimeter, the rest of the L4 light intensity is below 10 12 Watts per square centimeter.

[0088] In this embodiment, the full width at half maximum of the laser pulse output by the ...

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Abstract

A laser wake field accelerator and a method for generating a high-brightness attosecond optical pulse. The laser wake field accelerator comprises a laser source for generating a driving laser and a vacuum chamber provided with a gas generating device and a focusing system, wherein the gas generating device is used for generating a gas target (T1) having a rising density front edge along the propagation direction of the driving laser, while the focusing system is used for focusing the driving laser. After being focused by the focusing system, the driving laser generated by the laser source enters into the gas target (T1), so that gas molecules in the gas target (T1) are ionized by the laser beam, and attosecond pulse width electronic sheets are generated, injected and synchronously accelerated to obtain the attosecond optical pulse (R1). The attosecond optical pulse having an intensity of the theory of relativity can be generated, and attosecond radiation sources can be provided.

Description

technical field [0001] The invention relates to an accelerator and a coherent radiation source generating device, in particular to a laser wakefield accelerator for driving a gas target with an ultrashort intense laser and generating high-brightness attosecond light pulses. Background technique [0002] Attosecond (1 attosecond = 10 -18 second) light pulse is the shortest electromagnetic radiation available experimentally at present. It can track and manipulate electron motion at the atomic scale, and is a tool for studying and manipulating the microscopic world. For example, attosecond pulses can perform single-shot imaging of macromolecular structures, Diagnosis of chemical reaction process, identification of pharmaceutical ingredients, etc. Therefore, the development of attosecond pulse generation technology is of great value to basic scientific research in life, medicine, chemistry, and materials, as well as cutting-edge industrial applications. The generation of high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H5/00
CPCH05H15/00
Inventor 黎飞宇盛政明陈民於陆勒张杰
Owner SHANGHAI JIAO TONG UNIV
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