Schemes for recording and reconstruction of relief-phase reflection holograms providing virtually aberration-free imaging of the structure of two-dimensional objects were developed and substantiated. Samples of relief-phase reflection holograms forming a speckle-free image of a photolithographic test pattern ...
Speckle-free laser imaging using random laser illumination. Nat. Photonics 6, 355-359 (2012).B. Redding, M. A. Choma, and H. Cao, "Speckle-free laser imaging using random laser illumination," Nat. Photonics, vol. 6, pp. 355-359, 2012....
the threshold of random lasers based on AA-assisted quasi-2Dperovskite films can be reduced to 20% of that of pristine films.Benefiting from the high brightness, narrow bandwidth, and relativelylow spatial coherence of the random laser, we realized higher speckle-freeimaging of quasi-2D perovskite...
Spatial coherence in imaging has one notorious consequence: speckle. Itcorrupts images and limits laser use in applications ranging from modern microscopyto digital light projectors to photolithography. Most approaches for eliminatingspeckle involve time-averaging independent speckle patterns, which limits the...
(redirected fromSpeckle imaging) Encyclopedia Wikipedia speckle interferometry n (Astronomy)astronomya technique to increase the angular resolution of telescopes that are impaired by atmospheric turbulence, in which the information from a number of exposures of very short duration is combined ...
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Satellite imaging through a turbulent atmosphere is provided at better than turbulence-limited resolution using laser speckle statistics on reflections of orthogonal spatially periodic illumination pa
Gabor-type holographic imaging in the hard X-ray region is carried out using a speckle-free coherent spherical wave that is generated by combined use of an X-ray focusing optic and a spatial filter at the focal point. A Fresnel zone plate with an outermost zone width of 100 nm is used ...
The reproducibility of the speckle-free holographic displays is an important issue due to the sensitiveness of the coherent imaging. Peng et al. and Chakravarthula et al. deal with the speckle noise generated in the mismatch between the ideal and the actual wave propagation and summarizing the ...
there could be a future where the holographic displays look even more like real life. In their own pursuit of these better displays, the Stanford Computational Imaging Lab has combined their expertise in optics and artificial intelligence. Their most recent advances in this area are detailed in a...