Imaging of Volume Phase Gratings in a Photosensitive Polymer, Recorded in Transmission and Reflection Geometry

Applied Sciences

Tina Sabel¹ 

[1] Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany

关键词: volume holography;    phase gratings;    transmission gratings;    reflection gratings;    photosensitive polymers;    holographic data storage;    imaging techniques;    resolution limit;   

DOI  :  10.3390/app4010019

来源: mdpi

【 摘 要 】

Volume phase gratings, recorded in a photosensitive polymer by two-beam interference exposure, are studied by means of optical microscopy. Transmission gratings and reflection gratings, with periods in the order of 10 μm down to 130 nm, were investigated. Mapping of holograms by means of imaging in sectional view is introduced to study reflection-type gratings, evading the resolution limit of classical optical microscopy. In addition, this technique is applied to examine so-called parasitic gratings, arising from interference from the incident reference beam and the reflected signal beam. The appearance and possible avoidance of such unintentionally recorded secondary structures is discussed.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.