Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams
The generation of an elliptical Bessel–Gauss beam has become a topic of interest in ultrafast laser processing of transparent materials because of its nearly non-diffractive elliptical central core. These beams can show potential in generating anisotropic structures down to the nanoscale and in prod...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/6/651 |
| _version_ | 1827735990152724480 |
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| author | Niladri Ganguly Rajeev Dwivedi Ciro D’Amico Razvan Stoian |
| author_facet | Niladri Ganguly Rajeev Dwivedi Ciro D’Amico Razvan Stoian |
| author_sort | Niladri Ganguly |
| collection | DOAJ |
| description | The generation of an elliptical Bessel–Gauss beam has become a topic of interest in ultrafast laser processing of transparent materials because of its nearly non-diffractive elliptical central core. These beams can show potential in generating anisotropic structures down to the nanoscale and in producing asymmetries in the induced fields of thermo-mechanical constraints relevant for material structuring. However, maintaining the central core ellipticity is a challenge that requires further analysis, notably in the propagation behavior of phase anisotropies during the conical interference. This paper presents the controlled generation and propagation of a highly elliptical Bessel–Gauss beam using asymmetric phase-modulation technique. The study involves engineering different asymmetric phase holograms and analyzing their performances in terms of the non-diffractive property and uniformity of the generated beams. We indicate the presence in specific cases of diffraction and its influence on the invariance of the beam shape. The simulation results are in excellent agreement with the experimental results, which verifies the accuracy and reliability of our approach. |
| first_indexed | 2024-03-11T02:02:35Z |
| format | Article |
| id | doaj.art-d5c5718a3dfd4b86b2c357e0a6653ef0 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T02:02:35Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-d5c5718a3dfd4b86b2c357e0a6653ef02023-11-18T12:07:49ZengMDPI AGPhotonics2304-67322023-06-0110665110.3390/photonics10060651Asymmetric Shaping for Ultrafast Elliptical Bessel-like BeamsNiladri Ganguly0Rajeev Dwivedi1Ciro D’Amico2Razvan Stoian3Laboratoire Hubert Curien, UMR 5516 CNRS, Université Jean Monnet, 42000 Saint Etienne, FranceLaboratoire Hubert Curien, UMR 5516 CNRS, Université Jean Monnet, 42000 Saint Etienne, FranceLaboratoire Hubert Curien, UMR 5516 CNRS, Université Jean Monnet, 42000 Saint Etienne, FranceLaboratoire Hubert Curien, UMR 5516 CNRS, Université Jean Monnet, 42000 Saint Etienne, FranceThe generation of an elliptical Bessel–Gauss beam has become a topic of interest in ultrafast laser processing of transparent materials because of its nearly non-diffractive elliptical central core. These beams can show potential in generating anisotropic structures down to the nanoscale and in producing asymmetries in the induced fields of thermo-mechanical constraints relevant for material structuring. However, maintaining the central core ellipticity is a challenge that requires further analysis, notably in the propagation behavior of phase anisotropies during the conical interference. This paper presents the controlled generation and propagation of a highly elliptical Bessel–Gauss beam using asymmetric phase-modulation technique. The study involves engineering different asymmetric phase holograms and analyzing their performances in terms of the non-diffractive property and uniformity of the generated beams. We indicate the presence in specific cases of diffraction and its influence on the invariance of the beam shape. The simulation results are in excellent agreement with the experimental results, which verifies the accuracy and reliability of our approach.https://www.mdpi.com/2304-6732/10/6/651non-diffractive beamsbeam engineeringelliptical Bessel beams |
| spellingShingle | Niladri Ganguly Rajeev Dwivedi Ciro D’Amico Razvan Stoian Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams Photonics non-diffractive beams beam engineering elliptical Bessel beams |
| title | Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams |
| title_full | Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams |
| title_fullStr | Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams |
| title_full_unstemmed | Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams |
| title_short | Asymmetric Shaping for Ultrafast Elliptical Bessel-like Beams |
| title_sort | asymmetric shaping for ultrafast elliptical bessel like beams |
| topic | non-diffractive beams beam engineering elliptical Bessel beams |
| url | https://www.mdpi.com/2304-6732/10/6/651 |
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