The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height
Features of the diffraction of Gaussian beams and Laguerre–Gaussian modes on subwavelength optical 3D microstructures with variable relief heights are calculated and studied in this paper. Silicon subwavelength ring gratings and diffraction axicons were considered as such optical microstructures. Th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/11/1264 |
| _version_ | 1827638939218870272 |
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| author | Dmitry A. Savelyev |
| author_facet | Dmitry A. Savelyev |
| author_sort | Dmitry A. Savelyev |
| collection | DOAJ |
| description | Features of the diffraction of Gaussian beams and Laguerre–Gaussian modes on subwavelength optical 3D microstructures with variable relief heights are calculated and studied in this paper. Silicon subwavelength ring gratings and diffraction axicons were considered as such optical microstructures. The height of individual relief elements varied. The propagation of laser light through the proposed optical elements was simulated using the finite difference time domain (FDTD) method. It was shown that it is possible to select the height of individual relief rings of ring gratings in such a way that it is possible to reduce the size of the focal spot down to 0.36 λ, form an extended light segment (up to 5.79 λ), and form optical traps. |
| first_indexed | 2024-03-09T16:31:48Z |
| format | Article |
| id | doaj.art-dbaaa9fa7d54408988b5ed054a8fcd82 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T16:31:48Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-dbaaa9fa7d54408988b5ed054a8fcd822023-11-24T15:01:38ZengMDPI AGPhotonics2304-67322023-11-011011126410.3390/photonics10111264The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable HeightDmitry A. Savelyev0Samara National Research University, 443086 Samara, RussiaFeatures of the diffraction of Gaussian beams and Laguerre–Gaussian modes on subwavelength optical 3D microstructures with variable relief heights are calculated and studied in this paper. Silicon subwavelength ring gratings and diffraction axicons were considered as such optical microstructures. The height of individual relief elements varied. The propagation of laser light through the proposed optical elements was simulated using the finite difference time domain (FDTD) method. It was shown that it is possible to select the height of individual relief rings of ring gratings in such a way that it is possible to reduce the size of the focal spot down to 0.36 λ, form an extended light segment (up to 5.79 λ), and form optical traps.https://www.mdpi.com/2304-6732/10/11/1264optical trapsoptical vorticesGaussian beamssilicon ring gratingsdiffractive axiconFDTD |
| spellingShingle | Dmitry A. Savelyev The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height Photonics optical traps optical vortices Gaussian beams silicon ring gratings diffractive axicon FDTD |
| title | The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height |
| title_full | The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height |
| title_fullStr | The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height |
| title_full_unstemmed | The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height |
| title_short | The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height |
| title_sort | features of the optical traps formation using silicon ring gratings with variable height |
| topic | optical traps optical vortices Gaussian beams silicon ring gratings diffractive axicon FDTD |
| url | https://www.mdpi.com/2304-6732/10/11/1264 |
| work_keys_str_mv | AT dmitryasavelyev thefeaturesoftheopticaltrapsformationusingsiliconringgratingswithvariableheight AT dmitryasavelyev featuresoftheopticaltrapsformationusingsiliconringgratingswithvariableheight |