High resolution Shack-Hartmann sensor based on array of nanostructured GRIN lenses

Rafal Kasztelanic*, Adam Filipkowski, Dariusz Pysz, Ryszard Stepien, Andrew John Waddie, Mohammad Reza Taghizadeh, Ryszard Buczynski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)
317 Downloads (Pure)


We present a novel method for the development of a micro lenslets hexagonal array. We use gradient index (GRIN) micro lenses where the variation of the refraction index is achieved with a structure of nanorods made of 2 types of glasses. To develop the GRIN micro lens array, we used a modified stack-and-draw technology which was originally applied for the fabrication of photonic crystal fibers. This approach results in a completely flat element that is easy to integrate with other optical components and can be effectively used in high refractive index medium as liquids. As a proof-of-concept of the method we present a hexagonal array of 469 GRIN micro lenses with a diameter of 20 μm each and 100% fill factor. The GRIN lens array is further used to build a Shack-Hartmann detector for measuring wavefront distortion. A 50 lens/mm sampling density is achieved.

Original languageEnglish
Pages (from-to)1680-1691
Number of pages12
JournalOptics Express
Issue number3
Early online date23 Jan 2017
Publication statusPublished - 6 Feb 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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