| Download | - View final version: Multiphoton laser-induced confined chemical changes in polymer films (PDF, 1000 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1364/OE.389215 |
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| Author | Search for: Kallepalli, Deepak L. N.1ORCID identifier: https://orcid.org/0000-0002-2802-7390; Search for: Godfrey, Alan T. K.1ORCID identifier: https://orcid.org/0000-0002-6016-3624; Search for: Walia, Jaspreet; Search for: Variola, Fabio; Search for: Staudte, André1ORCID identifier: https://orcid.org/0000-0002-8284-3831; Search for: Zhang, Chunmei1ORCID identifier: https://orcid.org/0000-0002-1468-3514; Search for: Jakubek, Zygmunt J.2ORCID identifier: https://orcid.org/0000-0003-3307-8464; Search for: Corkum, P. B.1ORCID identifier: https://orcid.org/0000-0003-3394-5572 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
- National Research Council of Canada. Metrology Research Centre
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| Format | Text, Article |
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| Abstract | We report ultrafast-laser-induced photochemical, structural, and morphological changes in a polyimide film irradiated at the polymer-glass interface in back-incident geometry. Back-illumination creates locally hot material at the interface leading to a confined photochemical change at the interface and a morphological change through a blister formation. The laser-induced photochemical changes in polyimide resulted in new absorption and luminescence properties in the visible region. The laser-treated polyimide exhibited photoluminescence anisotropy resulting from formation of ordered polymer upon irradiation by linearly polarized ultrashort laser pulses. Confocal fluorescence microscopy resulted in similar observations to the bulk. Reflection-absorption infrared spectroscopy and X-ray photoelectron spectroscopy together indicated confinement of laser-induced chemical changes at the interface. |
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| Publication date | 2020-04-01 |
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| Publisher | Optical Society of America |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 4bb29577-6f8c-4c8f-98c9-92d4b1a5b724 |
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| Record created | 2020-07-02 |
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| Record modified | 2020-07-13 |
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