Abstract

We present generalized numerical predictions of the effects of transmitter-aperture size and divergence on the on-axis scintillations of a laser beam propagating through a turbulent stmosphere, utilizing analytical results obtained from the literature. The sharp reduction of scintillation that has been predicted for a large, focused beam is shown to depend very critically upon the focus adjustment; small misadjustments result in increases by orders of magnitude. This also implies that diffraction-limited optics may be required. This requirement, together with the implications of turbulent beam-wander and spreading effects, suggest that the predicted reduction is of little practical significance. We also present the conditions necessary for obtaining point-source results in scintillation experiments.

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  1. D. L. Fried and J. B. Seidman, J. Opt. Soc. Am. 57, 181 (1967).
  2. A. Ishimaru, Radio Sci. 4, 295 (1969).
  3. A. Ishimaru, Proc. IEEE 57, 407 (1969).
  4. F . P. Carlson, J. Opt. Soc. Am. 59, 1343 (1969).
  5. R. W. Lee and J. C. Harp, Proc. IEEE 57, 375 (1969).
  6. R. S. Lawrence and J. W. Strohbehn, Proc. IEEE 58, 1523 (1970).
  7. D. L. Fried, J. Opt. Soc. Am. 57, 980 (1967).
  8. E. C. Alcaraz and P. M. Livingston, in Proceedings of the Electro-Optical Systems Design Conference—West (Industrial and Scientific Conference Management, Inc., Chicago, 1971), p. 76.
  9. J. A. Dowling, J. A. Curcio, and H. Shenker, IEEE J. QE-7, 275 (1971).
  10. R. F. Lutomirski and H. T. Yura, Appl. Opt. 10, 1652 (1971).
  11. H. T. Yura (private communication).
  12. P. J. Titterton (private communication).

1971 (2)

J. A. Dowling, J. A. Curcio, and H. Shenker, IEEE J. QE-7, 275 (1971).

R. F. Lutomirski and H. T. Yura, Appl. Opt. 10, 1652 (1971).

1970 (1)

R. S. Lawrence and J. W. Strohbehn, Proc. IEEE 58, 1523 (1970).

1969 (4)

A. Ishimaru, Radio Sci. 4, 295 (1969).

A. Ishimaru, Proc. IEEE 57, 407 (1969).

F . P. Carlson, J. Opt. Soc. Am. 59, 1343 (1969).

R. W. Lee and J. C. Harp, Proc. IEEE 57, 375 (1969).

1967 (2)

D. L. Fried, J. Opt. Soc. Am. 57, 980 (1967).

D. L. Fried and J. B. Seidman, J. Opt. Soc. Am. 57, 181 (1967).

Alcaraz, E. C.

E. C. Alcaraz and P. M. Livingston, in Proceedings of the Electro-Optical Systems Design Conference—West (Industrial and Scientific Conference Management, Inc., Chicago, 1971), p. 76.

Carlson, F . P.

F . P. Carlson, J. Opt. Soc. Am. 59, 1343 (1969).

Curcio, J. A.

J. A. Dowling, J. A. Curcio, and H. Shenker, IEEE J. QE-7, 275 (1971).

Dowling, J. A.

J. A. Dowling, J. A. Curcio, and H. Shenker, IEEE J. QE-7, 275 (1971).

Fried, D. L.

D. L. Fried, J. Opt. Soc. Am. 57, 980 (1967).

D. L. Fried and J. B. Seidman, J. Opt. Soc. Am. 57, 181 (1967).

Harp, J. C.

R. W. Lee and J. C. Harp, Proc. IEEE 57, 375 (1969).

Ishimaru, A.

A. Ishimaru, Radio Sci. 4, 295 (1969).

A. Ishimaru, Proc. IEEE 57, 407 (1969).

Lawrence, R. S.

R. S. Lawrence and J. W. Strohbehn, Proc. IEEE 58, 1523 (1970).

Lee, R. W.

R. W. Lee and J. C. Harp, Proc. IEEE 57, 375 (1969).

Livingston, P. M.

E. C. Alcaraz and P. M. Livingston, in Proceedings of the Electro-Optical Systems Design Conference—West (Industrial and Scientific Conference Management, Inc., Chicago, 1971), p. 76.

Lutomirski, R. F.

R. F. Lutomirski and H. T. Yura, Appl. Opt. 10, 1652 (1971).

Seidman, J. B.

D. L. Fried and J. B. Seidman, J. Opt. Soc. Am. 57, 181 (1967).

Shenker, H.

J. A. Dowling, J. A. Curcio, and H. Shenker, IEEE J. QE-7, 275 (1971).

Strohbehn, J. W.

R. S. Lawrence and J. W. Strohbehn, Proc. IEEE 58, 1523 (1970).

Titterton, P. J.

P. J. Titterton (private communication).

Yura, H. T.

R. F. Lutomirski and H. T. Yura, Appl. Opt. 10, 1652 (1971).

H. T. Yura (private communication).

Other (12)

D. L. Fried and J. B. Seidman, J. Opt. Soc. Am. 57, 181 (1967).

A. Ishimaru, Radio Sci. 4, 295 (1969).

A. Ishimaru, Proc. IEEE 57, 407 (1969).

F . P. Carlson, J. Opt. Soc. Am. 59, 1343 (1969).

R. W. Lee and J. C. Harp, Proc. IEEE 57, 375 (1969).

R. S. Lawrence and J. W. Strohbehn, Proc. IEEE 58, 1523 (1970).

D. L. Fried, J. Opt. Soc. Am. 57, 980 (1967).

E. C. Alcaraz and P. M. Livingston, in Proceedings of the Electro-Optical Systems Design Conference—West (Industrial and Scientific Conference Management, Inc., Chicago, 1971), p. 76.

J. A. Dowling, J. A. Curcio, and H. Shenker, IEEE J. QE-7, 275 (1971).

R. F. Lutomirski and H. T. Yura, Appl. Opt. 10, 1652 (1971).

H. T. Yura (private communication).

P. J. Titterton (private communication).

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