Numerical analysis of the scaling parameter of adaptive compensation for thermal blooming effects

Yinbo Huang; Yingjian Wang; Zhiben Gong

doi:10.1117/12.481684

5 September 2002 Numerical analysis of the scaling parameter of adaptive compensation for thermal blooming effects

Yinbo Huang, Yingjian Wang, Zhiben Gong

Author Affiliations +

Proceedings Volume 4926, Adaptive Optics and Applications II; (2002) https://doi.org/10.1117/12.481684
Event: Photonics Asia, 2002, Shanghai, China

Abstract

By using the time-dependent propagation computer code, adaptive compensation for thermal blooming effects, which are induced by collimated high-energy laser (HEL) beam propagation through the atmosphere, is numerically calculated and analyzed under different conditions. The numerical results show that, with the definite adaptive optics (AO) system, the scaling parameter NJY'NFB is available to evaluate the effect of adaptive compensation efficiently. Moreover, we get the scaling relation between the scaling parameter ND/NFB and the far-field Strehi ratio, which is can be described by Strehl=1/[1+AND/NFB+B (ND/NFB) C] where A, B and C are fitting parameters. We also get the threshold of adaptive phase compensation instability (PCI) through analysis ofthe scaling relation above. In addition, we discuss the difference between adaptive compensation and whole-beam compensation.

Citation Download Citation

Yinbo Huang, Yingjian Wang, and Zhiben Gong "Numerical analysis of the scaling parameter of adaptive compensation for thermal blooming effects", Proc. SPIE 4926, Adaptive Optics and Applications II, (5 September 2002); https://doi.org/10.1117/12.481684

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