Exempel på speckle

• At this stage, these and other concepts are still being developed to increase the level of speckle smoothness for direct drive.

• From the transmission geometry of a small-angle experiment it is obvious that the transverse coherence length is the key factor that determines speckle.

• In these experiments, however, the average power in a speckle was of the order of 3% of the critical power for self-focusing.

• The instantaneous focal spot intensity is a highly nonuniform speckle.

• The target then integrates over a large number of uncorrelated speckle patterns and therefore "experiences" smoother irradiation.

• The wide divergence laser beam eliminates the speckle patterns caused by the phase plates.

• The very first section features a typically multi-layered texture with helter-skeltering violin scales speckled with pizzicato strings, brass and keyboards.

• The final chapter is on fundamental limits in photoelectric detection of light, and different kinds of interferometry, including speckle interferometry, are discussed in this context.

• The # 2 reduction due to the overlap of the two speckle patterns is readily discerned.

• At the target, these beamlets interfere and create a speckle pattern with a broad range of spatial frequencies.

• In some lights the under surface of the legs appears distinctly and regularly speckled, a character due evidently to the regular arrangement of the scales.

• The high spatial frequency components in the speckle pattern caused by random phase irradiation are removed by incoherent overlapping of broadband laser light.

• A pattern matching algorithm allows the operator to track speckles occurring naturally in the myocardium.

• This staining pattern was comparable with controls except for small debris-like speckles visible in some blastomeres.

• The single speckle, or hot spot, is the simplest irreducible element for studying laser plasma interactions.