Some methods for producing straight achromatic white-light fringes of variable contrast and constant average irradiance.
Some simple methods are described for producing an extended field of straight sinusoidal white-light fringes, whose contrast can be varied from 0 to 1 with the average power held constant. The contrast is controlled with a single moving element. The chromatic content of the fringes can also be controlled.
Goodman
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IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598, USA.