The bandwidth and stability of adaptive optics system

X. Q. Hu; X. Yu

The bandwidth and stability of adaptive optics system

X. Q. Hu^*, X. Yu

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The bandwidth and stability of adaptive optics system depend on the integration time of Harmann-Shack wavefront sensor (τ_d), and loop gain (g). The bandwidth is approximately 1/(10 τ_s), which is also affected by τ_d and g. The system has good performance against disturbances of frequencies lower than 1/(20τ_s). If τ_d≥τ_s, the system will be unstable. The reduction of g can stabilize the system.

Original language	English
Pages (from-to)	209-210+213
Journal	Guangxue Jishu/Optical Technique
Volume	27
Issue number	3
Publication status	Published - May 2001

Keywords

Adaptive optics
Bandwidth
Stability

Cite this

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title = "The bandwidth and stability of adaptive optics system",

abstract = "The bandwidth and stability of adaptive optics system depend on the integration time of Harmann-Shack wavefront sensor (τd), and loop gain (g). The bandwidth is approximately 1/(10 τs), which is also affected by τd and g. The system has good performance against disturbances of frequencies lower than 1/(20τs). If τd≥τs, the system will be unstable. The reduction of g can stabilize the system.",

keywords = "Adaptive optics, Bandwidth, Stability",

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T1 - The bandwidth and stability of adaptive optics system

AU - Hu, X. Q.

AU - Yu, X.

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N2 - The bandwidth and stability of adaptive optics system depend on the integration time of Harmann-Shack wavefront sensor (τd), and loop gain (g). The bandwidth is approximately 1/(10 τs), which is also affected by τd and g. The system has good performance against disturbances of frequencies lower than 1/(20τs). If τd≥τs, the system will be unstable. The reduction of g can stabilize the system.

AB - The bandwidth and stability of adaptive optics system depend on the integration time of Harmann-Shack wavefront sensor (τd), and loop gain (g). The bandwidth is approximately 1/(10 τs), which is also affected by τd and g. The system has good performance against disturbances of frequencies lower than 1/(20τs). If τd≥τs, the system will be unstable. The reduction of g can stabilize the system.

KW - Adaptive optics

KW - Bandwidth

KW - Stability

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AN - SCOPUS:0035351465

SN - 1002-1582

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SP - 209-210+213

JO - Guangxue Jishu/Optical Technique

JF - Guangxue Jishu/Optical Technique

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The bandwidth and stability of adaptive optics system

Abstract

Keywords

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