Two simple methods are presented by which the coherence between a laser light source and an illuminated object can be destroyed in optical systems where this coherence is undesirable. Both methods employ rotating phase changing disks; the first introduces a random time varying phase relationship across the area illuminated in the object plane, whereas the second produces a rapid, regular phase variation across this area. Results are claimed to be comparable to those obtained using normal incoherent light.
© 1968 Optical Society of America
Original Manuscript: May 29, 1968
Published: November 1, 1968
Malcolm J. Bowman, "Two New Methods of Improving Optical Image Quality," Appl. Opt. 7, 2280-2284 (1968)