Turning a polystyrene microsphere into a multimode light source by laser irradiation
Polystyrene (PS) is generally considered as a passive optical material that is transparent to light with wavelengths longer than 300 nm. In practice, PS micro- and nanospheres with uniform sizes are usually used to build photonic crystals based on self-assembly mechanism. Here, we demonstrate experi...
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De Gruyter
2022-10-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2022-0380 |
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| author | Liu Shimei Tie Shaolong Chen Jingdong Li Guangcan Yang Jiaxin Lan Sheng |
| author_facet | Liu Shimei Tie Shaolong Chen Jingdong Li Guangcan Yang Jiaxin Lan Sheng |
| author_sort | Liu Shimei |
| collection | DOAJ |
| description | Polystyrene (PS) is generally considered as a passive optical material that is transparent to light with wavelengths longer than 300 nm. In practice, PS micro- and nanospheres with uniform sizes are usually used to build photonic crystals based on self-assembly mechanism. Here, we demonstrate experimentally that PS microspheres supporting whispery gallery modes can be transformed into multimode light sources by laser irradiation. We show that a PS microsphere placed on a silica substrate can be lighted up when it is consecutively irradiated by using a 488-nm continuous wave laser beam with a pumping power above a threshold. Broadband luminescence emitted from the PS microsphere increases rapidly to a maximum value and decreases gradually with increasing irradiation time, implying the generation and degradation of a certain luminescent material upon laser irradiation. However, the PS microsphere is found to be damaged by high temperature based on morphology examination. By replacing the silica substrate with a thin silver film, the threshold laser power for lighting up a PS microsphere is dramatically reduced. More importantly, we can see enhanced luminescence intensities from the whispery gallery modes supported by the PS microsphere, which becomes an efficient multimode light source. Interestingly, the threshold laser power can be further lowered by inserting a molybdenum disulfide monolayer in between the PS microsphere and the silver film. As a result, the PS microsphere remains nearly unchanged except the formation of the luminescence material. Our findings open a new horizon for the interaction of polymer with laser light by exploiting the optical resonances supported by micro- and nanoparticles and pave the way for constructing photonic devices based on laser-induced luminescent materials in polymers. |
| format | Article |
| id | doaj-art-ed71c912b52e4ad2b99b665d29f7489b |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2022-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-ed71c912b52e4ad2b99b665d29f7489b2024-11-25T11:19:08ZengDe GruyterNanophotonics2192-86142022-10-0111214715472510.1515/nanoph-2022-0380Turning a polystyrene microsphere into a multimode light source by laser irradiationLiu Shimei0Tie Shaolong1Chen Jingdong2Li Guangcan3Yang Jiaxin4Lan Sheng5Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou510006, ChinaSchool of Chemistry, South China Normal University, Guangzhou510006, ChinaCollege of Physics and Information Engineering, Minnan Normal University, Zhangzhou363000, ChinaGuangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou510006, ChinaGuangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou510006, ChinaGuangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou510006, ChinaPolystyrene (PS) is generally considered as a passive optical material that is transparent to light with wavelengths longer than 300 nm. In practice, PS micro- and nanospheres with uniform sizes are usually used to build photonic crystals based on self-assembly mechanism. Here, we demonstrate experimentally that PS microspheres supporting whispery gallery modes can be transformed into multimode light sources by laser irradiation. We show that a PS microsphere placed on a silica substrate can be lighted up when it is consecutively irradiated by using a 488-nm continuous wave laser beam with a pumping power above a threshold. Broadband luminescence emitted from the PS microsphere increases rapidly to a maximum value and decreases gradually with increasing irradiation time, implying the generation and degradation of a certain luminescent material upon laser irradiation. However, the PS microsphere is found to be damaged by high temperature based on morphology examination. By replacing the silica substrate with a thin silver film, the threshold laser power for lighting up a PS microsphere is dramatically reduced. More importantly, we can see enhanced luminescence intensities from the whispery gallery modes supported by the PS microsphere, which becomes an efficient multimode light source. Interestingly, the threshold laser power can be further lowered by inserting a molybdenum disulfide monolayer in between the PS microsphere and the silver film. As a result, the PS microsphere remains nearly unchanged except the formation of the luminescence material. Our findings open a new horizon for the interaction of polymer with laser light by exploiting the optical resonances supported by micro- and nanoparticles and pave the way for constructing photonic devices based on laser-induced luminescent materials in polymers.https://doi.org/10.1515/nanoph-2022-0380laser irradiationmicrospherepolystyrenetwo-dimensional materialwhispery gallery mode |
| spellingShingle | Liu Shimei Tie Shaolong Chen Jingdong Li Guangcan Yang Jiaxin Lan Sheng Turning a polystyrene microsphere into a multimode light source by laser irradiation Nanophotonics laser irradiation microsphere polystyrene two-dimensional material whispery gallery mode |
| title | Turning a polystyrene microsphere into a multimode light source by laser irradiation |
| title_full | Turning a polystyrene microsphere into a multimode light source by laser irradiation |
| title_fullStr | Turning a polystyrene microsphere into a multimode light source by laser irradiation |
| title_full_unstemmed | Turning a polystyrene microsphere into a multimode light source by laser irradiation |
| title_short | Turning a polystyrene microsphere into a multimode light source by laser irradiation |
| title_sort | turning a polystyrene microsphere into a multimode light source by laser irradiation |
| topic | laser irradiation microsphere polystyrene two-dimensional material whispery gallery mode |
| url | https://doi.org/10.1515/nanoph-2022-0380 |
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