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References

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  1. J. W. Beams, Phys. Today, 12, No. 7, 20 (1959).
    [CrossRef]

1959

J. W. Beams, Phys. Today, 12, No. 7, 20 (1959).
[CrossRef]

Beams, J. W.

J. W. Beams, Phys. Today, 12, No. 7, 20 (1959).
[CrossRef]

Phys. Today

J. W. Beams, Phys. Today, 12, No. 7, 20 (1959).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

General scheme of simplest form of light chopper.

Fig. 2
Fig. 2

Coordinate system of calculation, showing relative intensity contours for fraction of focused beam passing through the slit.

Fig. 3
Fig. 3

Pulse form given by chopper (theoretical and experimental).

Fig. 4
Fig. 4

Present version of light chopper.

Equations (6)

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I ( x , y ) = 2 P o π a f 2 e - 2 ( x 2 + y 2 ) / ( a f 2 ) ,
a f = λ f / π a
P ( X ) = - d y - ( B - X ) X I ( x , y ) d x ,
P ( X ) = P o a f ( 2 π ) 1 2 - ( B - X ) X e - 2 x 2 / ( a f 2 ) d x .
X 10 - 90 = 1.28 [ λ f / ( π a ) ] .
T 10 - 90 = 1.28 [ λ f / ( π a ) ] 2 ω f 0.2 λ / ( a ω ) .

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