Scientists expand memory effect range through spatial filtering

Speckle autocorrelation imaging is a new emergent imaging technique through scattering media, with its main advantages in simple experimental setup, single-shot fast detection and non-invasion. The prerequisite of speckle autocorrelation imaging is optical memory effect, whose range determines the field of view (FOV) of imaging. The memory effect range is inversely proportional to the thickness of a medium. For real scattering media, such as biological tissues, the memory effect range approaches...