Tunable electrochromic filter for in situ Fourier spatial frequency filtering
- Spatial optical Fourier filtering is a widespread technique for in situ image or light field processing. However, conventional fixed absorbing patterns or mechanical irises only allow an inflexible, very restricted control. Thus, we present two electrochromic spatial filters with ring-shaped or directional segments, which can be individually addressed and continuously tuned in transmission resulting in up to 512 different filtering states. For realization of the electrochromic devices, we overcome technical obstacles to realize seamless, gap-free electrochromic segments. We describe this novel fabrication process and demonstrate the successful application in an optical Fourier transform set-up.
Author: | Alexander Hein, Bastian Kaiser, Carsten Kortz, Egbert OesterschulzeORCiD |
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URN: | urn:nbn:de:hbz:386-kluedo-64401 |
ISSN: | 1094-4087 |
Parent Title (English): | Optics Express |
Publisher: | OSA Publishing |
Document Type: | Article |
Language of publication: | English |
Date of Publication (online): | 2021/01/26 |
Year of first Publication: | 2021 |
Publishing Institution: | Technische Universität Kaiserslautern |
Date of the Publication (Server): | 2021/06/29 |
Tag: | Fourier filtering; electrochromic device; spatial optical filtering |
GND Keyword: | Elektrochromes Material; Fourieroptik; Nanopartikel |
Issue: | 29(5) |
Page Number: | 8 |
Source: | https://doi.org/10.1364/OE.418048 |
Faculties / Organisational entities: | Kaiserslautern - Fachbereich Physik |
DDC-Cassification: | 5 Naturwissenschaften und Mathematik / 530 Physik |
PACS-Classification (physics): | 70.00.00 CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Collections: | Open-Access-Publikationsfonds |
Licence (German): | Zweitveröffentlichung |