| Autor: |
Partha Mondal, Priyanka Choubey, Anu Gupta, Meher Wan, Yehia Massoud |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Materials Research Express, Vol 9, Iss 11, p 115001 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2053-1591 |
| DOI: |
10.1088/2053-1591/ac9d82 |
| Popis: |
By employing the ultrafast Z-scan technique, we characterize the nonlinear absorption property of PMMA/Bismuth Selenide ( Bi _2 Se _3 ) composite with varying concentrations. We report the fabrication of bismuth selenide ( Bi _2 Se _3 ) nanoplate (topological insulator (TI)) doped poly methyl methacrylate (PMMA) thin film with varying doping concentrations. The effect of Bi _2 Se _3 on structural and linear properties of PMMA thin film has been investigated through UV-Vis spectroscopy, scanning electron microscope (SEM), and Energy dispersive x-ray spectroscopy (EDS) elemental mapping techniques. Furthermore, the nonlinear optical absorption property of PMMA and PMMA/ Bi _2 Se _3 composites have been performed employing a single beam open aperture z-scan technique under femtosecond laser excitation at 750 nm. The z-scan results exhibit an enhancement of reverse saturable absorption (RSA) property with an increased nonlinear absorption coefficient ( β ) of the PMMA/ Bi _2 Se _3 composites compared to pure PMMA measured with intensity at 320 GW cm ^−2 . The RSA response gets enhanced with the increase in doping concentration also. Our experimental observations reveal that PMMA/ Bi _2 Se _3 composite can provide a promising platform to realize photonic devices such as optical limiters, optical switches, and efficient protectors from high power sources. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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