Abstract

A new and simple method for measuring the spot size of a laser beam is presented. In this method, the spot of a laser beam is scanned transversely across a straight boundary, and the intensity profile of the boundary-diffraction wave is observed. This intensity profile makes it possible to measure the spot size. The spot size of a He–Ne laser beam (wavelength 633 nm) has been measured to be 8.3 μm by using a Si3N4 straight pattern; this value is compared with 8.9 μm obtained by the knife-edge method.

© 1987 Optical Society of America

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References

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  1. P. Davidovits, M. D. Egger, Appl. Opt. 10, 1615 (1971).
    [CrossRef] [PubMed]
  2. D. R. Skinner, R. E. Whitcher, J. Phys. E 5, 237 (1972).
    [CrossRef]
  3. Y. Suzaki, A. Tachibana, Appl. Opt. 14, 2809 (1975).
    [CrossRef] [PubMed]
  4. A. H. Firester, M. E. Heller, P. Sheng, Appl. Opt. 16, 1971 (1977).
    [CrossRef] [PubMed]
  5. M. B. Schneider, W. W. Webb, Appl. Opt. 20, 1382 (1981).
    [CrossRef] [PubMed]
  6. P. J. Shayler, Appl. Opt. 17, 2673 (1978).
    [CrossRef] [PubMed]
  7. R. L. MaCally, Appl. Opt. 23, 2227 (1984).
    [CrossRef]
  8. A. Yoshida, T. Asakura, Opt. Laser Technol. 8, 273 (1976).
    [CrossRef]
  9. L. D. Dickson, Opt. Eng. 18, 70 (1979).
  10. D. K. Cohen, B. Little, F. S. Luecke, Appl. Opt. 23, 637 (1984).
    [CrossRef] [PubMed]
  11. G. Otis, J. Opt. Soc. Am. 64, 1545 (1974).
    [CrossRef]
  12. G. Otis, J. W. Y. Lit, Appl. Opt. 14, 1156 (1975).
    [CrossRef] [PubMed]
  13. P.-A. Belanger, M. Couture, J. Opt. Soc. Am. 73, 446 (1983).
    [CrossRef]

1984

1983

1981

1979

L. D. Dickson, Opt. Eng. 18, 70 (1979).

1978

1977

1976

A. Yoshida, T. Asakura, Opt. Laser Technol. 8, 273 (1976).
[CrossRef]

1975

1974

1972

D. R. Skinner, R. E. Whitcher, J. Phys. E 5, 237 (1972).
[CrossRef]

1971

Asakura, T.

A. Yoshida, T. Asakura, Opt. Laser Technol. 8, 273 (1976).
[CrossRef]

Belanger, P.-A.

Cohen, D. K.

Couture, M.

Davidovits, P.

Dickson, L. D.

L. D. Dickson, Opt. Eng. 18, 70 (1979).

Egger, M. D.

Firester, A. H.

Heller, M. E.

Lit, J. W. Y.

Little, B.

Luecke, F. S.

MaCally, R. L.

Otis, G.

Schneider, M. B.

Shayler, P. J.

Sheng, P.

Skinner, D. R.

D. R. Skinner, R. E. Whitcher, J. Phys. E 5, 237 (1972).
[CrossRef]

Suzaki, Y.

Tachibana, A.

Webb, W. W.

Whitcher, R. E.

D. R. Skinner, R. E. Whitcher, J. Phys. E 5, 237 (1972).
[CrossRef]

Yoshida, A.

A. Yoshida, T. Asakura, Opt. Laser Technol. 8, 273 (1976).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Experimental setup for measuring laser-beam spot size using a BDW.

Fig. 2
Fig. 2

(a) Observed intensity profile of the BDW: abscissa, 20 msec/division; ordinate, 50 mV/division. (b) Cross section of the straight pattern.

Fig. 3
Fig. 3

Observed total power profile of a transmitted laser beam. The laser beam is interrupted by a knife-edge, and the transmitted laser beam is detected by a solar cell. Abscissa, 10 msec/division; ordinate, 50 mV/division.

Equations (2)

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U K ( P ) = U B ( P ) + U 0 ( P ) ,
ω = 0.7803 d ,

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