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Journal article

Complex vectorial optics through gradient index lens cascades

Abstract:
Graded index (GRIN) lenses are commonly used for compact imaging systems. It is not widely appreciated that the ion-exchange process that creates the rotationally symmetric GRIN lens index profile also causes a symmetric birefringence variation. This property is usually considered a nuisance, such that manufacturing processes are optimized to keep it to a minimum. Here, rather than avoiding this birefringence, we understand and harness it by using GRIN lenses in cascade with other optical components to enable extra functionality in commonplace GRIN lens systems. We show how birefringence in the GRIN cascades can generate vector vortex beams and foci, and how it can be used advantageously to improve axial resolution. Through using the birefringence for analysis, we show that the GRIN cascades form the basis of a new single-shot Müller matrix polarimeter with potential for endoscopic label-free cancer diagnostics. The versatility of these cascades opens up new technological directions.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1038/s41467-019-12286-3

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Role:
Author
ORCID:
0000-0001-9654-830X
More by this author
Role:
Author
ORCID:
0000-0001-5486-315X


Publisher:
Nature Research
Journal:
Nature Communications More from this journal
Volume:
10
Issue:
1
Article number:
4264
Publication date:
2019-09-19
Acceptance date:
2019-08-29
DOI:
EISSN:
2041-1723
Pmid:
31537802


Language:
English
Keywords:
Pubs id:
pubs:1054648
UUID:
uuid:902ea20b-a5f4-44ac-b0a5-3e4b2083a052
Local pid:
pubs:1054648
Source identifiers:
1054648
Deposit date:
2019-10-01

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