Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores
We report herein results on the third-order non-linear optical (NLO) properties of four structurally unconstrained green fluorescence protein (GFP) chromophores, namely, 1, 2, 3, and 4. Using experimental techniques and theoretical calculations such as UV–visible spectroscopy, density functional the...
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.914135/full |
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| author | Md Soif Ahmed Chinmoy Biswas Dipanjan Banerjee Prabhakar Chetti Jye-Shane Yang Venugopal Rao Soma Sai Santosh Kumar Raavi |
| author_facet | Md Soif Ahmed Chinmoy Biswas Dipanjan Banerjee Prabhakar Chetti Jye-Shane Yang Venugopal Rao Soma Sai Santosh Kumar Raavi |
| author_sort | Md Soif Ahmed |
| collection | DOAJ |
| description | We report herein results on the third-order non-linear optical (NLO) properties of four structurally unconstrained green fluorescence protein (GFP) chromophores, namely, 1, 2, 3, and 4. Using experimental techniques and theoretical calculations such as UV–visible spectroscopy, density functional theory (DFT), time-dependent density functional theory (TDDFT), and Z-scan techniques, we have investigated the linear absorption, ultrafast non-resonant third-order optical non-linearities, and the onset of optical-limiting thresholds of these benzylidenedimethylimidazolinone (BDI) dyes. The Z-scan measurements were performed at a wavelength of 800 nm with ∼70 femtosecond (fs) pulses. We have witnessed a strong reverse saturable absorption (fitted to three-photon absorption) for all of the molecules with fs pulse excitation. The valley–peak curves obtained from the closed-aperture Z-scan technique revealed the positive non-linear refractive index (self-focusing) nature of these molecules. We have evaluated the various third-order NLO coefficients (second hyperpolarizability, γ ∼10–33 esu), which were found to be larger than those of similar molecules reported in the recent literature. |
| first_indexed | 2024-12-11T04:44:35Z |
| format | Article |
| id | doaj.art-68f43edef8ca45319e67155d62ed6e2a |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-12-11T04:44:35Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-68f43edef8ca45319e67155d62ed6e2a2022-12-22T01:20:33ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-07-011010.3389/fphy.2022.914135914135Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein ChromophoresMd Soif Ahmed0Chinmoy Biswas1Dipanjan Banerjee2Prabhakar Chetti3Jye-Shane Yang4Venugopal Rao Soma5Sai Santosh Kumar Raavi6Ultrafast Photo-Physics and Photonics Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Telangana, IndiaUltrafast Photo-Physics and Photonics Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Telangana, IndiaAdvanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, IndiaDepartment of Chemistry, National Institute of Technology, Kurukshetra, IndiaDepartment of Chemistry, National Taiwan University, Taipei, TaiwanAdvanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, IndiaUltrafast Photo-Physics and Photonics Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Telangana, IndiaWe report herein results on the third-order non-linear optical (NLO) properties of four structurally unconstrained green fluorescence protein (GFP) chromophores, namely, 1, 2, 3, and 4. Using experimental techniques and theoretical calculations such as UV–visible spectroscopy, density functional theory (DFT), time-dependent density functional theory (TDDFT), and Z-scan techniques, we have investigated the linear absorption, ultrafast non-resonant third-order optical non-linearities, and the onset of optical-limiting thresholds of these benzylidenedimethylimidazolinone (BDI) dyes. The Z-scan measurements were performed at a wavelength of 800 nm with ∼70 femtosecond (fs) pulses. We have witnessed a strong reverse saturable absorption (fitted to three-photon absorption) for all of the molecules with fs pulse excitation. The valley–peak curves obtained from the closed-aperture Z-scan technique revealed the positive non-linear refractive index (self-focusing) nature of these molecules. We have evaluated the various third-order NLO coefficients (second hyperpolarizability, γ ∼10–33 esu), which were found to be larger than those of similar molecules reported in the recent literature.https://www.frontiersin.org/articles/10.3389/fphy.2022.914135/fullgreen fluorescent proteinZ-scan techniqueDFTfemtosecondsecond hyperpolarizabilityoptical limiting |
| spellingShingle | Md Soif Ahmed Chinmoy Biswas Dipanjan Banerjee Prabhakar Chetti Jye-Shane Yang Venugopal Rao Soma Sai Santosh Kumar Raavi Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores Frontiers in Physics green fluorescent protein Z-scan technique DFT femtosecond second hyperpolarizability optical limiting |
| title | Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores |
| title_full | Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores |
| title_fullStr | Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores |
| title_full_unstemmed | Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores |
| title_short | Femtosecond Third-Order Non-Linear Optical Properties of Unconstrained Green Fluorescence Protein Chromophores |
| title_sort | femtosecond third order non linear optical properties of unconstrained green fluorescence protein chromophores |
| topic | green fluorescent protein Z-scan technique DFT femtosecond second hyperpolarizability optical limiting |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.914135/full |
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