Response of graphene to femtosecond high-intensity laser irradiation

Journal Article · Mon Aug 01 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3623760· OSTI ID:22027697

Roberts, Adam ^[1]; Cormode, Daniel; Reynolds, Collin; Newhouse-Illige, Ty; LeRoy, Brian J ^[2]; Sandhu, Arvinder S ^[2]

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1. College of Optical Sciences, University of Arizona, Tucson, Arizona 85701 (United States)
2. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)

We study the response of graphene to high-intensity, 50-femtosecond laser pulse excitation. We establish that graphene has a high ({approx}3 x 10{sup 12} Wcm{sup -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 leading to degradation of the lattice over multiple exposures. We identify the lattice modification processes through in-situ Raman microscopy. The effective lifetime of chemical vapor deposition grown graphene under femtosecond near-infrared 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.

• OSTI ID: 22027697
• Journal Information: Applied Physics Letters, Vol. 99, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CHEMICAL VAPOR DEPOSITION
CRYSTAL GROWTH
CRYSTAL LATTICES
EXCITATION
LASER RADIATION
LIFETIME
MICROSCOPY
MODIFICATIONS
NANOSTRUCTURES
NEAR INFRARED RADIATION
NONLINEAR PROBLEMS
PULSED IRRADIATION
PULSES
RAMAN SPECTRA
RAMAN SPECTROSCOPY