Abstract
A new field of optics, appropriately called tunabte coherence optics, is finding an increasing number of applications in optical research and industry, for example, speckle reduction, apodization with partially coherent light, linewidth measurements in microdensitometry, optical projection lithography, and laser scanning, However, progress in tunabte coherence optics is hampered by lack of suitable and convenient light sources, Light beams of controlled States of coherence are presently produced by various means that make use of optical and holographic elements, scattering by liquid crystals and ultrasound, and amplified spontaneous emission.
© 1985 Optical Society of America
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