Abstract
We propose two designs with which one can obtain a circular light
disk with both uniform irradiance and phase, namely, a homodisk on a
plane target from a TEM0,0 Gaussian beam. The first
design is pure-phase filtering masks based on wave theory and computer
simulation. The second design, an aspherical lens, satisfies the
two requirements successively. We used geometrical optics to obtain
uniform irradiance with the aspherical lens. The theoretical
results of both designs are reasonably good.
© 1998 Optical Society of America
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