Photonic nanojets generated by microfabricated dielectric cylinders using proton beam writing
Photonic nanojet (PNJ) is an optical phenomenon that focuses incident light to a sub-wavelength beam waist/width and several wavelength long beam length by scattering with a microstructure. Here, we report on the PNJs directly generated along the axial axis of poly(methyl methacrylate) (PMMA) micro-...
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| Veröffentlicht in: | Applied physics letters 2023-10, Vol.123 (14) |
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| container_issue | 14 |
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| container_title | Applied physics letters |
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| creator | Kosumsupamala, Kunpisit Tobe, Keito Tsuji, Akihiro Seya, Daiya Seki, Hironori Puttaraksa, Nitipon Matsui, Tatsunosuke Nishikawa, Hiroyuki |
| description | Photonic nanojet (PNJ) is an optical phenomenon that focuses incident light to a sub-wavelength beam waist/width and several wavelength long beam length by scattering with a microstructure. Here, we report on the PNJs directly generated along the axial axis of poly(methyl methacrylate) (PMMA) micro-cylinders of 2, 4, 6, and 8 μm diameters fabricated by proton beam writing approach. Experimental results reveal that the PMMA micro-cylinders were produced with smooth surfaces, which are appropriate to form the PNJs. Accordingly, the PNJs were measured by using an in-house confocal microscope apparatus. The results show that the larger micro-cylinder diameters led to wider and longer PNJs, which agree well with the finite-difference time-domain simulation. This fabrication of micro-cylinders could offer specific PNJ properties for advancing sub-wavelength applications. |
| doi_str_mv | 10.1063/5.0169290 |
| format | Article |
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Here, we report on the PNJs directly generated along the axial axis of poly(methyl methacrylate) (PMMA) micro-cylinders of 2, 4, 6, and 8 μm diameters fabricated by proton beam writing approach. Experimental results reveal that the PMMA micro-cylinders were produced with smooth surfaces, which are appropriate to form the PNJs. Accordingly, the PNJs were measured by using an in-house confocal microscope apparatus. The results show that the larger micro-cylinder diameters led to wider and longer PNJs, which agree well with the finite-difference time-domain simulation. 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Here, we report on the PNJs directly generated along the axial axis of poly(methyl methacrylate) (PMMA) micro-cylinders of 2, 4, 6, and 8 μm diameters fabricated by proton beam writing approach. Experimental results reveal that the PMMA micro-cylinders were produced with smooth surfaces, which are appropriate to form the PNJs. Accordingly, the PNJs were measured by using an in-house confocal microscope apparatus. The results show that the larger micro-cylinder diameters led to wider and longer PNJs, which agree well with the finite-difference time-domain simulation. 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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Cylinders Diameters Finite difference time domain method Incident light Photonics Polymethyl methacrylate Proton beams |
| title | Photonic nanojets generated by microfabricated dielectric cylinders using proton beam writing |
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