Generalized lock-in detection applied to lens-less digital holographic interferometry
Digital Holography and Three-Dimensional Imaging
Optical Society of America
A simple, lens-less, holographic microscope is built based on “Generalized Lock-in detection”, as an alternative to phase-shifting interferometry. This approach is tested on several samples, and it is used to demonstrate displacement field. OCIS codes: (090.1995) Digital holography; (090.2880) Holographic interferometry; (100.2650) Fringe analysis; (120.5050) Phase measurement; (120.5060) Phase modulation ... Phase information in optics is of crucial importance for a large number of applications ranging from sensing, near- field microscopy to spatial ...