Exploring the capabilities of Digital Holography as tool for testing optical microstructures

Year: 2011

Authors: Merola F., Miccio L., Coppola S., Vespini V., Paturzo M., Grilli S., Ferraro P.

Autors Affiliation: CNR – Istituto Nazionale di Ottica,Via Campi Flegrei, 34 – 80078 Pozzuoli (NA), Italy

Abstract: A demonstration of the capabilities of Digital Holography (DH) in microscope configuration is presented for inspecting and qualifying optical microstructures. Different structures with dimensions ranging from hundreds to few tens of microns are investigated, analyzed and characterized by DH showing that the technique is suitable either for liquid as well as polymeric microlenses.
Thanks to the numerical reconstruction of the complex
wavefields, we show that DH is able to retrieve not only
the morphology of each single structure element but also to
furnish accurate information on all the changes (spontaneous or induced) occurring during the inspection
time, such as the curvature variation of liquid microlenses
or the wavefront distortion.


Volume: 2      Pages from: 01003 -1  to: 01003-8

KeyWords: Digital holographic microscopy; Optical microstructures; microlenses
DOI: 10.1007/3DRes.01(2011)3