Progress on ultra precision manufacturing technology of large-aperture high-power laser optics

Fan Fei; Xu Xi; Xu Qiao; Wang Jian; Zhong Bo; Xie Ruiqing; Lei Xiangyang; Chen Xianhua; Wang Shengfei; Hou Jing; Deng Wenhui; An Chenhui; Zhou Lian; Zhao Shijie; Liao Defeng; Zhu Yujie

doi:10.12086/oee.2020.200135

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Fan F, Xu X, Xu Q, et al. Progress on ultra precision manufacturing technology of large-aperture high-power laser optics[J]. Opto-Electron Eng, 2020, 47(8): 200135. doi: 10.12086/oee.2020.200135

Citation:

Fan F, Xu X, Xu Q, et al. Progress on ultra precision manufacturing technology of large-aperture high-power laser optics[J]. Opto-Electron Eng, 2020, 47(8): 200135. doi: 10.12086/oee.2020.200135

Progress on ultra precision manufacturing technology of large-aperture high-power laser optics

Research Centre of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China

Fund Project: Supported by National Science and Technology Major Project of the Ministry of Science and Technology of China (2017ZX04022001-101)

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Corresponding author: Xu Qiao, E-mail: xuqiao@vip.sina.com

Received Date 21 April 2020

Revised Date 20 June 2020

Published Date 01 August 2020

Abstract

Abstract

The construction of high-power solid-state laser facility for inertial confinement fusion requires to precisely control the full-spatial frequency error, and realize efficient mass-manufacturing of large-aperture optics. This review summarizes the recent critical progress in manufacturing of large-aperture optics in high-power laser facility. It also emphasizes the technologies such as single point diamond fly-cutting, and aspheric ultra-precision grinding, as well as deterministic polishing, based on the deterministic ultra-precision process manufacturing method. In addition, the application status of these key technologies in the mass-manufacturing chain was stated specifically.
- high-power laser facility /
- large-aperture optics /
- optical ultra-precision manufacturing technology /
- deterministic polishing

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References

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Overview

Overview

Overview: The high-power solid-state laser facility for inertial confinement fusion is the largest optical system with the most complex structure. It requires tens of thousands of large-aperture high-power laser optics, including phosphate neodymium glass amplifier, plane mirrors, aspheric focusing lens, diffraction elements, and nonlinear laser crystals. In order to further improve the beam quality and realize the stable operation under high laser flux, these large-aperture optics are required to precisely control the full-spatial frequency error, and realize efficient mass-manufacturing. This review summarizes the recent critical progress in the field of ultra-precise manufacturing of large-aperture optics for high-power laser facility, especially for the technology and equipment of single point diamond fly-cutting, aspheric ultra-precision grinding, and deterministic polishing. In addition, the application status of these key technologies in the mass-manufacturing flow-line is stated specifically. Moreover, with the continuous improvement of comprehensive performance for high-power laser facility, the typical requirements for ultra-precise manufacturing of high-power laser optics are as follows: 1) The development of advanced optical manufacturing technology will march towards the extreme conditions, such as complex aspheric structures, nano-scale shape control, sub-nanometer ultra-smooth surface, etc. 2) The damage-free machining over optical surfaces is in urgent demand, and it is necessary to break through the traditional polishing mechanism and technology, in order to develop novel principles, methods and technologies to realize near non-defect manufacturing. 3) The efficiency of mass manufacturing of optics needs to be improved, and further improvement of the reliability and stability of equipment, as well as the enhancement of flexible and intelligent manufacturing is of great demand. This will help to establish the fast response ability to support the research and development on modern optical system.