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An intelligent computation system for precise assembly of large laser optics

Hui Wang (Department of Mechanical Engineering, State Key Laboratory of Tribology, Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Tsinghua University, Beijing, China)
Zheng Zhang (Department of Mechanical Engineering, State Key Laboratory of Tribology, Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Tsinghua University, Beijing, China)
Zhao Xiong (Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, China)
Tianye Liu (Department of Mechanical Engineering, State Key Laboratory of Tribology, Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Tsinghua University, Beijing, China)
Kai Long (Department of Mechanical Engineering, State Key Laboratory of Tribology, Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Tsinghua University, Beijing, China)
Xusong Quan (Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, China)
Xiaodong Yuan (Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, China)

Assembly Automation

ISSN: 0144-5154

Article publication date: 8 March 2018

Issue publication date: 26 October 2018

252

Abstract

Purpose

It is a huge technical and engineering challenge to realize the precise assembly of thousands of large optics in high power solid-state laser system. Using the 400-mm aperture-sized transport mirror as a case, this paper aims to present an intelligent numerical computation methodology for mounting performance analysis and modeling of large optics in a high-power laser system for inertial confinement fusion (ICF).

Design/methodology/approach

Fundamental principles of modeling and analysis of the transport mirror surface distortion are proposed, and a genetic algorithm-based computation framework is proposed to evaluate and optimize the assembly and mounting performance of large laser optics.

Findings

The stringent specifications of large ICF optics place very tight constraints upon the transport mirror’s assembly and mounts. The operational requirements on surface distortion [peak-to-valley and root mean square (RMS)] can be met as it is appropriately assembled by the close loop of assembly-inspection-optimization-fastening. In the end, the experimental study validates the reliability and effectiveness of the transport mirror mounting method.

Originality/value

In the assembly design and mounting performance evaluation of large laser optics, the whole study has the advantages of accurate evaluation and intelligent optimization on nano-level optical surface distortion, which provides a fundamental methodology for precise assembly and mounting of large ICF optics.

Keywords

Acknowledgements

The author would like to acknowledge the support and contributions of colleagues in the Research Centre of Laser Fusion, China Academy of Engineering Physic. This research is supported in part by the National Key Scientific Instrument and Equipment Development Project (2016YFF0101900), National Natural Science Foundation of China (Grant 51575310) and Beijing Municipal Natural Science Foundation (Grant 3162014).

Citation

Wang, H., Zhang, Z., Xiong, Z., Liu, T., Long, K., Quan, X. and Yuan, X. (2018), "An intelligent computation system for precise assembly of large laser optics", Assembly Automation, Vol. 38 No. 4, pp. 524-535. https://doi.org/10.1108/AA-04-2017-048

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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