Binary amplitude holograms for shaping complex light fields with digital micromirror devices
Digital micromirror devices are a popular type of spatial light modulators for wavefront shaping applications. While they offer several advantages when compared to liquid crystal modulators, such as polarization insensitivity and rapid-switching, they only provide a binary amplitude modulation. Desp...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | JPhys Photonics |
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| Online Access: | https://doi.org/10.1088/2515-7647/ad8617 |
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| author | R Gutiérrez-Cuevas S M Popoff |
| author_facet | R Gutiérrez-Cuevas S M Popoff |
| author_sort | R Gutiérrez-Cuevas |
| collection | DOAJ |
| description | Digital micromirror devices are a popular type of spatial light modulators for wavefront shaping applications. While they offer several advantages when compared to liquid crystal modulators, such as polarization insensitivity and rapid-switching, they only provide a binary amplitude modulation. Despite this restriction, it is possible to use binary holograms to modulate both the amplitude and phase of the incoming light, thus allowing the creation of complex light fields. Here, a didactic exploration of various types of binary holograms is presented. A particular emphasis is placed on the fact that the finite number of pixels coupled with the binary modulation limits the number of complex values that can be encoded into the holograms. This entails an inevitable trade-off between the number of complex values that can be modulated with the hologram and the number of independent degrees of freedom available to shape light, both of which impact the quality of the shaped field. Nonetheless, it is shown that by appropriately choosing the type of hologram and its parameters, it is possible to find a suitable compromise that allows shaping a wide range of complex fields with high accuracy. In particular, it is shown that choosing the appropriate alignment between the hologram and the micromirror array allows for maximizing the number of complex values. Likewise, the implications of the type of hologram and its parameters on the diffraction efficiency are also considered. |
| format | Article |
| id | doaj-art-266bdaed430f45b09e5fe309994a4e63 |
| institution | OA Journals |
| issn | 2515-7647 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Photonics |
| spelling | doaj-art-266bdaed430f45b09e5fe309994a4e632025-08-20T01:54:16ZengIOP PublishingJPhys Photonics2515-76472024-01-016404502210.1088/2515-7647/ad8617Binary amplitude holograms for shaping complex light fields with digital micromirror devicesR Gutiérrez-Cuevas0https://orcid.org/0000-0002-3451-6684S M Popoff1https://orcid.org/0000-0002-7199-9814Institut Langevin, ESPCI Paris, Université PSL , CNRS, 75005 Paris, France; Université Paris-Saclay , CNRS, ENS Paris-Saclay, CentraleSupélec, LuMIn, 91405 Orsay, FranceInstitut Langevin, ESPCI Paris, Université PSL , CNRS, 75005 Paris, FranceDigital micromirror devices are a popular type of spatial light modulators for wavefront shaping applications. While they offer several advantages when compared to liquid crystal modulators, such as polarization insensitivity and rapid-switching, they only provide a binary amplitude modulation. Despite this restriction, it is possible to use binary holograms to modulate both the amplitude and phase of the incoming light, thus allowing the creation of complex light fields. Here, a didactic exploration of various types of binary holograms is presented. A particular emphasis is placed on the fact that the finite number of pixels coupled with the binary modulation limits the number of complex values that can be encoded into the holograms. This entails an inevitable trade-off between the number of complex values that can be modulated with the hologram and the number of independent degrees of freedom available to shape light, both of which impact the quality of the shaped field. Nonetheless, it is shown that by appropriately choosing the type of hologram and its parameters, it is possible to find a suitable compromise that allows shaping a wide range of complex fields with high accuracy. In particular, it is shown that choosing the appropriate alignment between the hologram and the micromirror array allows for maximizing the number of complex values. Likewise, the implications of the type of hologram and its parameters on the diffraction efficiency are also considered.https://doi.org/10.1088/2515-7647/ad8617structured lightdigital micromirror deviceshologramsSpatial light modulatorswavefront shaping |
| spellingShingle | R Gutiérrez-Cuevas S M Popoff Binary amplitude holograms for shaping complex light fields with digital micromirror devices JPhys Photonics structured light digital micromirror devices holograms Spatial light modulators wavefront shaping |
| title | Binary amplitude holograms for shaping complex light fields with digital micromirror devices |
| title_full | Binary amplitude holograms for shaping complex light fields with digital micromirror devices |
| title_fullStr | Binary amplitude holograms for shaping complex light fields with digital micromirror devices |
| title_full_unstemmed | Binary amplitude holograms for shaping complex light fields with digital micromirror devices |
| title_short | Binary amplitude holograms for shaping complex light fields with digital micromirror devices |
| title_sort | binary amplitude holograms for shaping complex light fields with digital micromirror devices |
| topic | structured light digital micromirror devices holograms Spatial light modulators wavefront shaping |
| url | https://doi.org/10.1088/2515-7647/ad8617 |
| work_keys_str_mv | AT rgutierrezcuevas binaryamplitudehologramsforshapingcomplexlightfieldswithdigitalmicromirrordevices AT smpopoff binaryamplitudehologramsforshapingcomplexlightfieldswithdigitalmicromirrordevices |