Common-path digital holographic microscopy and its applications

Abstract

To significantly increase the stability of the digital holographic microscope, some common-path configurations with a piece of glass plate, Lloyd mirror and lensless structure are introduced in digital holographic microscopy to make up several compact experiment systems. Meanwhile, dual-wavelength technique and some numerical algorithms are also employed to improve the measurement accuracy. As examples, we apply these configurations to measure a mouse osteoblastic cell, laser ablated pit specimen and silicon wafer. The experiment results show the feasibility of the proposed configurations.