Femtosecond laser-induced nonlinear absorption in thick polystyrene
The nonlinear absorption behavior of thick polystyrene sample was experimentally investigated and theoretically analyzed. As polystyrene is transparent to the applied laser wavelength, the absorption was mainly through nonlinear absorption by the bulk material. The effective second order nonlinear a...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/146696 |
| _version_ | 1811697535979356160 |
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| author | Wang, Bing Wang, Xincai Zheng, Hongyu Lam, Yee Cheong |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Wang, Bing Wang, Xincai Zheng, Hongyu Lam, Yee Cheong |
| author_sort | Wang, Bing |
| collection | NTU |
| description | The nonlinear absorption behavior of thick polystyrene sample was experimentally investigated and theoretically analyzed. As polystyrene is transparent to the applied laser wavelength, the absorption was mainly through nonlinear absorption by the bulk material. The effective second order nonlinear absorption coefficient (β) was determined with the z scan technique. The nonlinear behavior at different laser powers: 5.2 mW, 10.4 mW, 14.4 mW and 23.5 mW were investigated. The transmittance of laser energy was measured and a significant change was observed with different sample distance from the laser focal plane. By treating the thick polystyrene sample as a stack of thin layers, the effective nonlinear absorption coefficient was determined to be 0.000695 m/W with a standard deviation of 0.000026. |
| first_indexed | 2024-10-01T07:56:49Z |
| format | Journal Article |
| id | ntu-10356/146696 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:56:49Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1466962021-05-01T20:12:50Z Femtosecond laser-induced nonlinear absorption in thick polystyrene Wang, Bing Wang, Xincai Zheng, Hongyu Lam, Yee Cheong School of Mechanical and Aerospace Engineering SIMTech-NTU Joint Laboratory Singapore Institute of Manufacturing Technology Engineering::Mechanical engineering Femtosecond Laser Nonlinear Absorption The nonlinear absorption behavior of thick polystyrene sample was experimentally investigated and theoretically analyzed. As polystyrene is transparent to the applied laser wavelength, the absorption was mainly through nonlinear absorption by the bulk material. The effective second order nonlinear absorption coefficient (β) was determined with the z scan technique. The nonlinear behavior at different laser powers: 5.2 mW, 10.4 mW, 14.4 mW and 23.5 mW were investigated. The transmittance of laser energy was measured and a significant change was observed with different sample distance from the laser focal plane. By treating the thick polystyrene sample as a stack of thin layers, the effective nonlinear absorption coefficient was determined to be 0.000695 m/W with a standard deviation of 0.000026. Accepted version 2021-03-05T05:41:55Z 2021-03-05T05:41:55Z 2019 Journal Article Wang, B., Wang, X., Zheng, H., & Lam, Y. C. (2019). Femtosecond laser-induced nonlinear absorption in thick polystyrene. Lasers in Manufacturing and Materials Processing, 6(1), 59-66. doi:10.1007/s40516-019-0080-z 2196-7229 0000-0002-5764-8380 https://hdl.handle.net/10356/146696 10.1007/s40516-019-0080-z 2-s2.0-85060711653 1 6 59 66 en Lasers in Manufacturing and Materials Processing © 2019, Springer Science+Business Media, LLC, part of Springer Nature. This is a post-peer-review, pre-copyedit version of an article published in Lasers in Manufacturing and Materials Processing. The final authenticated version is available online at: http://dx.doi.org/10.1007/s40516-019-0080-z. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Femtosecond Laser Nonlinear Absorption Wang, Bing Wang, Xincai Zheng, Hongyu Lam, Yee Cheong Femtosecond laser-induced nonlinear absorption in thick polystyrene |
| title | Femtosecond laser-induced nonlinear absorption in thick polystyrene |
| title_full | Femtosecond laser-induced nonlinear absorption in thick polystyrene |
| title_fullStr | Femtosecond laser-induced nonlinear absorption in thick polystyrene |
| title_full_unstemmed | Femtosecond laser-induced nonlinear absorption in thick polystyrene |
| title_short | Femtosecond laser-induced nonlinear absorption in thick polystyrene |
| title_sort | femtosecond laser induced nonlinear absorption in thick polystyrene |
| topic | Engineering::Mechanical engineering Femtosecond Laser Nonlinear Absorption |
| url | https://hdl.handle.net/10356/146696 |
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