تقرير
Response of graphene to femtosecond high-intensity laser irradiation
| العنوان: | Response of graphene to femtosecond high-intensity laser irradiation |
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| المؤلفون: | Roberts, Adam, Cormode, Daniel, Reynolds, Collin, Newhouse-Illige, Ty, LeRoy, Brian J., Sandhu, Arvinder S. |
| المصدر: | Appl. Phys. Lett. 99, 051912 (2011) |
| سنة النشر: | 2011 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Physics - Optics |
| الوصف: | We study the response of graphene to high-intensity 10^11-10^12 Wcm^-2, 50-femtosecond laser pulse excitation. We establish that graphene has a fairly high (~3\times10^12Wcm^-2) single-shot damage threshold. Above this threshold, a single laser pulse cleanly ablates graphene, leaving microscopically defined edges. Below this threshold, we observe laser-induced defect formation that leads to degradation of the lattice over multiple exposures. We identify the lattice modification processes through in-situ Raman microscopy. The effective lifetime of CVD graphene under femtosecond near-IR irradiation and its dependence on laser intensity is determined. These results also define the limits of non-linear applications of graphene in femtosecond high-intensity regime. Comment: 4 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/1.3623760 |
| URL الوصول: | http://arxiv.org/abs/1105.1193 |
| رقم الأكسشن: | edsarx.1105.1193 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/1.3623760 |
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