Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite
An ultrashort-pulse laser inscription of embedded birefringent microelements was performed inside bulk fluorite in pre-filamentation (geometrical focusing) and filamentation regimes as a function of laser wavelength, pulsewidth and energy. The resulting elements composed of anisotropic nanolattices...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/6/1133 |
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| author | Sergey Kudryashov Alexey Rupasov Mikhail Smayev Pavel Danilov Evgeny Kuzmin Irina Mushkarina Alexey Gorevoy Anna Bogatskaya Alexander Zolot’ko |
| author_facet | Sergey Kudryashov Alexey Rupasov Mikhail Smayev Pavel Danilov Evgeny Kuzmin Irina Mushkarina Alexey Gorevoy Anna Bogatskaya Alexander Zolot’ko |
| author_sort | Sergey Kudryashov |
| collection | DOAJ |
| description | An ultrashort-pulse laser inscription of embedded birefringent microelements was performed inside bulk fluorite in pre-filamentation (geometrical focusing) and filamentation regimes as a function of laser wavelength, pulsewidth and energy. The resulting elements composed of anisotropic nanolattices were characterized by retardance (<i>Ret</i>) and thickness (<i>T</i>) quantities, using polarimetric and 3D-scanning confocal photoluminescence microscopy, respectively. Both parameters exhibit a monotonous increase versus pulse energy, going over a maximum at 1-ps pulsewidth at 515 nm, but decrease versus laser pulsewidth at 1030 nm. The resulting refractive-index difference (RID) Δ<i>n</i> = <i>Ret</i>/<i>T</i> ~ 1 × 10<sup>−3</sup> remains almost constant versus pulse energy and slightly decreases at a higher pulsewidth, generally being higher at 515 nm. The birefringent microelements were visualized using scanning electron microscopy and chemically characterized using energy-dispersion X-ray spectroscopy, indicating the increase of calcium and the contrary decrease of fluorine inside them due to the non-ablative inscription character. Dynamic far-field optical diffraction of the inscribing ultrashort laser pulses also demonstrated the accumulative inscription character, depending on the pulse energy and the laser exposure. Our findings revealed the underlying optical and material inscription processes and demonstrated the robust longitudinal homogeneity of the inscribed birefringent microstructures and the facile scalability of their thickness-dependent retardance. |
| first_indexed | 2024-03-11T06:05:24Z |
| format | Article |
| id | doaj.art-b4147b0420f741cb8f4df20ed6131374 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T06:05:24Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b4147b0420f741cb8f4df20ed61313742023-11-17T13:02:00ZengMDPI AGNanomaterials2079-49912023-03-01136113310.3390/nano13061133Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in FluoriteSergey Kudryashov0Alexey Rupasov1Mikhail Smayev2Pavel Danilov3Evgeny Kuzmin4Irina Mushkarina5Alexey Gorevoy6Anna Bogatskaya7Alexander Zolot’ko8Lebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaLebedev Physical Institute, 119991 Moscow, RussiaAn ultrashort-pulse laser inscription of embedded birefringent microelements was performed inside bulk fluorite in pre-filamentation (geometrical focusing) and filamentation regimes as a function of laser wavelength, pulsewidth and energy. The resulting elements composed of anisotropic nanolattices were characterized by retardance (<i>Ret</i>) and thickness (<i>T</i>) quantities, using polarimetric and 3D-scanning confocal photoluminescence microscopy, respectively. Both parameters exhibit a monotonous increase versus pulse energy, going over a maximum at 1-ps pulsewidth at 515 nm, but decrease versus laser pulsewidth at 1030 nm. The resulting refractive-index difference (RID) Δ<i>n</i> = <i>Ret</i>/<i>T</i> ~ 1 × 10<sup>−3</sup> remains almost constant versus pulse energy and slightly decreases at a higher pulsewidth, generally being higher at 515 nm. The birefringent microelements were visualized using scanning electron microscopy and chemically characterized using energy-dispersion X-ray spectroscopy, indicating the increase of calcium and the contrary decrease of fluorine inside them due to the non-ablative inscription character. Dynamic far-field optical diffraction of the inscribing ultrashort laser pulses also demonstrated the accumulative inscription character, depending on the pulse energy and the laser exposure. Our findings revealed the underlying optical and material inscription processes and demonstrated the robust longitudinal homogeneity of the inscribed birefringent microstructures and the facile scalability of their thickness-dependent retardance.https://www.mdpi.com/2079-4991/13/6/1133fluoriteultrashort-pulse laserdirect laser inscriptionnanolatticesbirefringence |
| spellingShingle | Sergey Kudryashov Alexey Rupasov Mikhail Smayev Pavel Danilov Evgeny Kuzmin Irina Mushkarina Alexey Gorevoy Anna Bogatskaya Alexander Zolot’ko Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite Nanomaterials fluorite ultrashort-pulse laser direct laser inscription nanolattices birefringence |
| title | Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite |
| title_full | Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite |
| title_fullStr | Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite |
| title_full_unstemmed | Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite |
| title_short | Multi-Parametric Birefringence Control in Ultrashort-Pulse Laser-Inscribed Nanolattices in Fluorite |
| title_sort | multi parametric birefringence control in ultrashort pulse laser inscribed nanolattices in fluorite |
| topic | fluorite ultrashort-pulse laser direct laser inscription nanolattices birefringence |
| url | https://www.mdpi.com/2079-4991/13/6/1133 |
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