Graphene mode-locked femtosecond Yb:KLuW laser
E. Ugolotti1,2, A. Schmidt1, V. Petrov1, J.W. Kim3, D.-I. Yeom3, F. Rotermund3, S. Bae4, B.H. Hong4, A. Agnesi2, C. Fiebig5, G. Erbert5, X. Mateos6, M. Aguiló6, F. Diaz6, and U. Griebner1
Published in:
Appl. Phys. Lett., vol. 101, no. 161112 (2012).
Abstract:
Large-area monolayer graphene, synthesized by chemical vapor deposition, was transferred to a 1-in. quartz substrate. The high-quality monolayer graphene has been subject to characterization of the nonlinear properties near 1 µm and was successfully applied as saturable absorber for passive mode-locking of a femtosecond Yb:KLuW laser. The diode-pumped mode-locked Yb:KLuW laser was tunable around 1.04 µm and delivered pulses as short as 160 fs. The maximum output power of 160 mW was demonstrated for 203 fs pulse duration. The mode-locked laser results are comparable to those demonstrated with the same laser gain medium using single-walled carbon nanotubes as saturable absorbers.
1 Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Str. 2a, D-12489 Berlin, Germany
2 University of Pavia, via Ferrata 1, 27100 Pavia, Italy
3 Department of Physics & Division of Energy Systems Research, Ajou University, 443-749 Suwon, Korea
4 Department of Chemistry, Seoul National University, Seoul 151-7474, Korea
5 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
6 Física i Cristal.lografia de Materials, Universitat Rovira i Virgili, Campus Sescelades, C/ Marcel.li Domingo, E-43007 Tarragona, Spain
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