Partially spatially coherent illumination for laser based projection display, digital holographic microscopy, and quantitative phase microscopy: Improvement on image sharpness, phase noise, resolution, and speckle free imaging (Conference Presentation)

Abstract

There has been great progress in the development of laser based projection display, fluorescence microscopy, digital holographic microscopy, and various quantitative phase microscopic (QPM) techniques for biological cells and tissues. We present the effect of partial spatial coherent illumination on speckle free laser projection imaging, homogeneous illumination for fluorescence microscopy, and speckle-free low phase noise QPM. We further notice that with the use a partially spatially coherent monochromatic light one can obtain improved image sharpness, reduction in coherent noise, improved phase noise and resolution in QPM. But at the same time the other remarkable properties of laser light, i.e., it’s high monochromaticity, high brightness (high degeneracy) and directionality are fully utilized in realizing all these techniques. Results of various digital holographic phase microscopic techniques, fluorescence microscopy, and projection display will be presented and results will be co