High‐Contrast Switching of Light Enabled by Zero Diffraction
Diffraction allows to change the direction of light. Therefore, controlling the diffraction efficiency with high contrast enables controlling the pathway of light within optical systems. However, a high contrast requires that the diffraction efficiency is tunable close to zero. Probably the most pro...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-11-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202300230 |
| _version_ | 1797631089989124096 |
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| author | Andreas Henkel Sven Oliver Schumacher Maik Meudt Christopher Knoth Maximilian Buchmüller Patrick Görrn |
| author_facet | Andreas Henkel Sven Oliver Schumacher Maik Meudt Christopher Knoth Maximilian Buchmüller Patrick Görrn |
| author_sort | Andreas Henkel |
| collection | DOAJ |
| description | Diffraction allows to change the direction of light. Therefore, controlling the diffraction efficiency with high contrast enables controlling the pathway of light within optical systems. However, a high contrast requires that the diffraction efficiency is tunable close to zero. Probably the most prominent example for zero diffraction in a waveguide grating is a bound state in the continuum (BIC). Herein, zero diffraction of two plane waves under symmetric incidence to a leaky symmetric waveguide grating is found. The phenomenon not only occurs at singular spectral positions but on continuous curves in the energy–momentum space. The relative phase of the two waves enables large contrast control over diffraction in a wide spectral range. The practical meaning of this finding for local switching is demonstrated. Light is trapped into a nonlinear optical waveguide and detrapped at a desired position with electric control. A switching contrast exceeding 1000 is experimentally shown. |
| first_indexed | 2024-03-11T11:17:00Z |
| format | Article |
| id | doaj.art-ec92c2f372f74bbb91af58336f6aaefb |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-03-11T11:17:00Z |
| publishDate | 2023-11-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-ec92c2f372f74bbb91af58336f6aaefb2023-11-11T03:09:03ZengWiley-VCHAdvanced Photonics Research2699-92932023-11-01411n/an/a10.1002/adpr.202300230High‐Contrast Switching of Light Enabled by Zero DiffractionAndreas Henkel0Sven Oliver Schumacher1Maik Meudt2Christopher Knoth3Maximilian Buchmüller4Patrick Görrn5Chair of Large Area Optoelectronics University of Wuppertal Rainer-Gruenter-Str. 21 42119 Wuppertal GermanyChair of Large Area Optoelectronics University of Wuppertal Rainer-Gruenter-Str. 21 42119 Wuppertal GermanyChair of Large Area Optoelectronics University of Wuppertal Rainer-Gruenter-Str. 21 42119 Wuppertal GermanyChair of Large Area Optoelectronics University of Wuppertal Rainer-Gruenter-Str. 21 42119 Wuppertal GermanyChair of Large Area Optoelectronics University of Wuppertal Rainer-Gruenter-Str. 21 42119 Wuppertal GermanyChair of Large Area Optoelectronics University of Wuppertal Rainer-Gruenter-Str. 21 42119 Wuppertal GermanyDiffraction allows to change the direction of light. Therefore, controlling the diffraction efficiency with high contrast enables controlling the pathway of light within optical systems. However, a high contrast requires that the diffraction efficiency is tunable close to zero. Probably the most prominent example for zero diffraction in a waveguide grating is a bound state in the continuum (BIC). Herein, zero diffraction of two plane waves under symmetric incidence to a leaky symmetric waveguide grating is found. The phenomenon not only occurs at singular spectral positions but on continuous curves in the energy–momentum space. The relative phase of the two waves enables large contrast control over diffraction in a wide spectral range. The practical meaning of this finding for local switching is demonstrated. Light is trapped into a nonlinear optical waveguide and detrapped at a desired position with electric control. A switching contrast exceeding 1000 is experimentally shown.https://doi.org/10.1002/adpr.202300230controllable interactiondetrapping of lightsymmetrytrapping of lightzero diffraction |
| spellingShingle | Andreas Henkel Sven Oliver Schumacher Maik Meudt Christopher Knoth Maximilian Buchmüller Patrick Görrn High‐Contrast Switching of Light Enabled by Zero Diffraction Advanced Photonics Research controllable interaction detrapping of light symmetry trapping of light zero diffraction |
| title | High‐Contrast Switching of Light Enabled by Zero Diffraction |
| title_full | High‐Contrast Switching of Light Enabled by Zero Diffraction |
| title_fullStr | High‐Contrast Switching of Light Enabled by Zero Diffraction |
| title_full_unstemmed | High‐Contrast Switching of Light Enabled by Zero Diffraction |
| title_short | High‐Contrast Switching of Light Enabled by Zero Diffraction |
| title_sort | high contrast switching of light enabled by zero diffraction |
| topic | controllable interaction detrapping of light symmetry trapping of light zero diffraction |
| url | https://doi.org/10.1002/adpr.202300230 |
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