Study of the Effect of Intake Layout on the Wavefront in a Beam Expanding System of a Telescope
Source abstract
Abstract
The main disadvantage of windowless beam expansion systems is that they cannot achieve a good sealing effect. Turbulence and impurities in the environment can easily affect the imaging and primary mirror. Thus, in this study, a matrix of small holes was introduced for inflation to form a stable and smooth flow inside the system to avoid these disadvantages. In order to study the layout of the matrix, the flow state of the model was analysed, and the Lorentz–Lorenz formula and Barron gradient operator were used for ray tracing. Simulation results show that when the matrix of small holes is arranged in 16 rows with 360 holes in each row, inflation has a lesser effect on the wavefront aberration of the system. Moreover, the root mean square (RMS) of wavefront aberration was only 0.077 μm, which was superior to the other layouts considered. Experimental results show that the RMS was 0.08 μm in this state, which is consistent with the analysis. This indicates that this analysis method can meet actual work needs. The calculation methods and calculation results have high reliability and, thus, can be also used in similar situations.
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Research context
OpenAlex topics: Adaptive optics and wavefront sensing · Advanced Image Processing Techniques · Optical Systems and Laser Technology
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Optics and Electronics, Chinese Academy of Sciences, No. 1 Guangdian Road, Chengdu 610209, China
Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu 610209, China
University of the Chinese Academy of Sciences, Beijing 100049, China
Funding
Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology · Excellent Youth Foundation of Sichuan Scientific Committee · Youth Innovation Promotion Association
References (25)
Show source-provided references
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