Spatial coherence in imaging has one notorious consequence: speckle. It corrupts images and limits laser use in applications ranging from modern microscopy to digital light projectors to photolithography. Most approaches for eliminating speckle involve time-averaging independent speckle patterns, which limits the imaging speed. We have taken a different approach-instead of averaging out the speckle that is already present, we prevent speckle formation by using an unconventional random laser.
© 2012 Optical Society of America
Vol. 8, Iss. 1 Virtual Journal for Biomedical Optics
Brandon Redding, Hui Cao, and Michael A. Choma, "Speckle-Free Laser Imaging with Random Laser Illumination," Optics & Photonics News 23(12), 30-30 (2012)
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