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https://doi.org/10.1016/j.proeng.2012.03.085
| Title: | Femtosecond carrier dynamics and saturable absorption in functionalized epitaxial graphene | Authors: | Xiao, S. Hoh, H.Y. Loh, K.P. |
Keywords: | Carrier dynamics Epitaxial grapheme Saturable absorption |
Issue Date: | 2012 | Citation: | Xiao, S., Hoh, H.Y., Loh, K.P. (2012). Femtosecond carrier dynamics and saturable absorption in functionalized epitaxial graphene. Procedia Engineering 36 : 583-588. ScholarBank@NUS Repository. https://doi.org/10.1016/j.proeng.2012.03.085 | Abstract: | We have measured carrier relaxation times and nonlinear optical properties in three functionalized epitaxial graphene layers grown on SiC wafers by using ultrafast optical pump-probe spectroscopy and open aperture z-scan at 780 nm. The results demonstrate that after different functionalization, the ratios of the slower relaxation in the range of 3.1-4.6 ps (related to carrier-phonon intraband and interband scattering) increase about 2-6 times compared to original graphene. These changes of relaxation obviously improved the nonlinear optical properties, making functionalized epitaxial graphene can be used as a tuneable saturable absorber. © 2012 Published by Elsevier Ltd. | Source Title: | Procedia Engineering | URI: | http://scholarbank.nus.edu.sg/handle/10635/95461 | ISSN: | 18777058 | DOI: | 10.1016/j.proeng.2012.03.085 |
| Appears in Collections: | Staff Publications |
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