Abstract

During strong scintillation, the number and location of branch points in a distorted optical field induced by atmospheric turbulence are closely related to the characteristic parameters of the turbulence effect, propagation distance, and wavelength. It is necessary to consider the effect of the beacon’s wavelength on the adaptive optics system that is used to compensate for atmospheric turbulence. Our analytical results show that the performance of adaptive optics can be improved by nearly a factor of 2 when the beacon’s wavelength is chosen slightly longer than the wavelength of the main laser in the branch points considered.

© 2004 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. C. A. Primmerman, T. R. Price, R. A. Humphreys, B. G. Zollars, H. T. Barclay, J. Herrmann, “Atmospheric-compensation experiments in strong-scintillation conditions,” Appl. Opt. 34, 2081–2088 (1995).
    [CrossRef] [PubMed]
  2. M. C. Roggemann, A. C. Koivunen, “Branch-point reconstruction in laser beam projection through turbulence with finite-degree-freedom phase-only wave-front correction,” J. Opt. Soc. Am. A 17, 53–62 (2000).
    [CrossRef]
  3. M. C. Roggemann, A. C. Koivunen, “Wave-front sensing and deformable-mirror control in strong scintillation,” J. Opt. Soc. Am. A 17, 911–919 (2000).
    [CrossRef]
  4. V. V. Voitsekhovich, D. Kouznetsov, D. Kh. Morozov, “Density of turbulence-induced phase dislocations,” Appl. Opt. 37, 4525–4535 (1998).
    [CrossRef]
  5. D. L. Fried, “Branch point problem in adaptive optics,” J. Opt. Soc. Am. A 15, 2759–2768 (1998).
    [CrossRef]
  6. E.-O. Le Bigot, W. J. Wild, E. J. Kibblewhite, “Reconstruction of discontinuous light-phase functions,” Opt. Lett. 23, 10–12 (1998).
    [CrossRef]

2000

1998

1995

Barclay, H. T.

Fried, D. L.

Herrmann, J.

Humphreys, R. A.

Kibblewhite, E. J.

Koivunen, A. C.

Kouznetsov, D.

Le Bigot, E.-O.

Morozov, D. Kh.

Price, T. R.

Primmerman, C. A.

Roggemann, M. C.

Voitsekhovich, V. V.

Wild, W. J.

Zollars, B. G.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (3)

Fig. 1
Fig. 1

SR results for several beacon wavelengths in weak scintillation.

Fig. 2
Fig. 2

SR results for branch-point and least-squares reconstruction in moderate scintillation. (a) Relation of branch-point pairs to beacon wavelength; (b) SR versus beacon wavelength.

Fig. 3
Fig. 3

SR results for branch-point and least-squares reconstruction in strong scintillation. (a) Relation of branch-point pairs to beacon wavelength; (b) SR versus beacon wavelength.

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

φr=tan-1ImUrReUr,
Δφxi, j=argexpjφi+1, j-φi, j,
Δφyi, j=argexpjφi, j+1-φi, j,
gi, j=-Δφxi, j-Δφyi+1, j+Δφxi, j+1+Δφyi, j.
uj1=k neighbor ofjexpidj,kuk0,
uj11=k neighbor ofjexpiαdj,kuk0.
SR=Actual intensity in the Airy diskIntensity in the Airy disk with no turbulence.

Metrics