Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45°
Grating under auto-collimation configuration with polarization-independent high diffraction efficiency plays an important role in the displacement measurement system, spectral beam combining system and so on. In this paper, we proposed, for the first time, a reflective two-dimensional metal-dielectr...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0399 |
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| _version_ | 1832570462425579520 |
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| author | Wang Yi-Han Wang Jin Chen Yu-Da Huang Zhi-Sen Jia Wei Zhou Chang-He |
| author_facet | Wang Yi-Han Wang Jin Chen Yu-Da Huang Zhi-Sen Jia Wei Zhou Chang-He |
| author_sort | Wang Yi-Han |
| collection | DOAJ |
| description | Grating under auto-collimation configuration with polarization-independent high diffraction efficiency plays an important role in the displacement measurement system, spectral beam combining system and so on. In this paper, we proposed, for the first time, a reflective two-dimensional metal-dielectric grating of which the (−1, −1) order beam is diffracted back along the input light direction, when the incident azimuth angle is 45°. With optimized structure, the (−1, −1) order diffraction efficiencies of transverse electric polarization (TE) and transverse magnetic polarization (TM) are 95.01 % and 95.04 % at incident wavelength of 632 nm, respectively. The structure based on the frustum of a cone performs well in manufacturing tolerance, which provides possibility for practical applications. A grating is fabricated experimentally in this research. The high efficiencies of TE and TM polarization have great application potential in 2D displacement measurement technique and high power laser systems. |
| format | Article |
| id | doaj-art-d5d0c236dbc549278ce0873d35f1fa30 |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-d5d0c236dbc549278ce0873d35f1fa302025-02-02T15:46:12ZengDe GruyterNanophotonics2192-86142025-01-01141334110.1515/nanoph-2024-0399Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45°Wang Yi-Han0Wang Jin1Chen Yu-Da2Huang Zhi-Sen3Jia Wei4Zhou Chang-He5College of Physics & Optoelectronic Engineering, 47885Jinan University, Guangzhou, Guangdong510632, ChinaCollege of Physics & Optoelectronic Engineering, 47885Jinan University, Guangzhou, Guangdong510632, ChinaCollege of Physics & Optoelectronic Engineering, 47885Jinan University, Guangzhou, Guangdong510632, ChinaCollege of Physics & Optoelectronic Engineering, 47885Jinan University, Guangzhou, Guangdong510632, ChinaCollege of Physics & Optoelectronic Engineering, 47885Jinan University, Guangzhou, Guangdong510632, ChinaCollege of Physics & Optoelectronic Engineering, 47885Jinan University, Guangzhou, Guangdong510632, ChinaGrating under auto-collimation configuration with polarization-independent high diffraction efficiency plays an important role in the displacement measurement system, spectral beam combining system and so on. In this paper, we proposed, for the first time, a reflective two-dimensional metal-dielectric grating of which the (−1, −1) order beam is diffracted back along the input light direction, when the incident azimuth angle is 45°. With optimized structure, the (−1, −1) order diffraction efficiencies of transverse electric polarization (TE) and transverse magnetic polarization (TM) are 95.01 % and 95.04 % at incident wavelength of 632 nm, respectively. The structure based on the frustum of a cone performs well in manufacturing tolerance, which provides possibility for practical applications. A grating is fabricated experimentally in this research. The high efficiencies of TE and TM polarization have great application potential in 2D displacement measurement technique and high power laser systems.https://doi.org/10.1515/nanoph-2024-0399two-dimensional gratingpolarization independencehigh efficiency |
| spellingShingle | Wang Yi-Han Wang Jin Chen Yu-Da Huang Zhi-Sen Jia Wei Zhou Chang-He Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45° Nanophotonics two-dimensional grating polarization independence high efficiency |
| title | Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45° |
| title_full | Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45° |
| title_fullStr | Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45° |
| title_full_unstemmed | Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45° |
| title_short | Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45° |
| title_sort | auto collimation diffraction of two dimensional metal dielectric grating with azimuth angle of 45° |
| topic | two-dimensional grating polarization independence high efficiency |
| url | https://doi.org/10.1515/nanoph-2024-0399 |
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