Laser focusing adjustment system for realizing interaction with 360-degree configuration of directional beam line

Abstract

The invention discloses a laser focusing adjustment system for realizing the interaction with the 360-degree configuration of a directional beam line. The laser focusing adjustment system comprises afocusing light path, a focal spot detection alignment system and a vacuum cavity. According to the laser focusing adjustment system for realizing the interaction with the 360-degree configuration of the directional beam line provided by the invention, a laser light is initially and vertically transmitted from top to bottom, an optical axis is s, the directional beam line is transmitted along the horizontal direction, a central axis is t, and the axis s and the axis t intersect at a point O (a fixed laser focal spot position). According to the laser focusing adjustment system for realizing theinteraction with the 360-degree configuration of the directional beam line provided by the invention, a planar mirror (the reflection angle is M, and the M is more than 45 degrees and less than 90 degrees) is used for deflecting the laser light to the side lower part, and then the laser light is reflected by an off-axis paraboloidal mirror (the off-axis angle is N, and the N is equal to 2M-90 degrees) along the horizontal direction and is focused at the point O under the assistance of the focal spot detection alignment system. The planar mirror and the off-axis paraboloidal mirror are stably supported on a three-dimensional pagoda platform. The planar mirror and the off-axis paraboloidal mirror synchronously rotate along the axis s, so that the interaction of the laser light and the 360-degree configuration of the directional beam line at the point O is realized. The laser focusing adjustment system for realizing the interaction with the 360-degree configuration of the directional beamline provided by the invention has the characteristics of simple optical path, low cost, flexible operation and the like.

Description

technical field

[0001] The invention relates to the field of interaction between relativistic laser and plasma, specifically, it is a device for completing laser focusing and realizing 360° interaction with another directional beamline. Background technique

[0002] In recent years, with the vigorous development of laser technology, especially the invention of chirped pulse amplification technology, the laboratory has been able to obtain more than 10 22 W / cm 2 , Relativistic intensity laser pulse with a single pulse width less than 10fs, such a strong laser can rapidly ionize matter to form plasma, and the interaction between laser and matter enters the field of strong relativistic nonlinear optics. Through laser plasma interaction, high-quality (high energy, high current intensity, low energy dispersion, high collimation) electron sources, ion sources and X / gamma ray sources can be obtained. Such particle sources are used in biomedicine, chemical materials, high energy phy...

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