Enhancement of axial resolution on digital holographic microscopy by optimizing light source characteristics based on patterned quantum dots film with blue LED

To Improve axial resolution of digital holographic microscopy, we optimized the light source based on the patterned quantum dots (QDs) film with blue LED. We tried to pattern the QDs laterally as a 2-D patterned QD film by photolithography and micro imprinting process to improve color conversion efficiency of QDs as well as keep narrow bandwidth, resulting in enhancing the optical intensity and axial resolution. Using the additional optical edge filters and relay optics, newly proposed light source of digital holography microscopy for QPI has resulted in the enhanced axial resolution to1.8μm and the increased optical signal.