Device for enhancing power density of focal spot of large light-spot laser system

Abstract

A device for enhancing the power density of a focal spot of a large light-spot laser system comprises a large light-spot laser system laser source, a deformation mirror, a reflection mirror, a wave front measuring instrument, an off-axis parabolic mirror, CCD array detectors and a computer, and is characterized in that the reflection light path of the off-axis parabolic mirror is provided with the deformation mirror which is a small-caliber deformation mirror, the reflection light path of the deformation mirror is sequentially provided with the reflection mirror and the wave front measuring instrument, the reflection light path of the reflection mirror and the focal plane of the off-axis parabolic mirror are provided with the CCD array detectors, the output end of the wave front measuring instrument is connected with the input end of the computer and the output end of the computer is connected with the control end of the deformation mirror. The device self-adaptively enhances the power density of the focal spot of the large light-spot laser system by using the small-caliber deformation mirror and is characterized by low price, simpleness and high efficiency.

Description

technical field [0001] The invention relates to adaptive optics and laser technology, in particular to a device for increasing the power density of the focal spot of a large-spot laser system, which is suitable for a method for improving the power density of the focal spot of a large-spot laser system by a small-diameter deformable mirror. Background technique [0002] Ultra-short and ultra-intensive laser science is an important scientific frontier with the development of ultra-short and ultra-intense laser technology, the interaction between ultra-short and ultra-intense laser and matter, and the frontier basic research in interdisciplinary and related high-tech fields. The field is the basis for realizing extreme physical conditions and revealing the essence of matter. [0003] Since the mid-1980s, high-power ultrashort pulse laser technology has developed rapidly, and major scientific and technological countries in the world, including my country, have successively estab...

AI Technical Summary

Problems solved by technology

However, it is not easy to obtain large-diameter deformable mirrors. On the one hand, large-diameter deformable mirrors require more expensive prices;

[0009] In short, the contradiction between the limitation of the diameter of the deformable mirror and the increasing trend of the spot of the large laser system is an insurmountable obstacle on the way to increase the power density of the focal spot by using the traditional deformable mirror.

Images