Y. K. Yap1**, N. M. Huang2, S. W. Harun1,3,4, H. Ahmad1,4
1Photonics Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia 2Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia 3Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia 4Nanotechnology Research Alliance, Universiti Teknologi Malaysia, 81310 UTM, Johore Bahru, Johor Darul Takzim, Malaysia
Abstract：We demonstrate a pulsed ring erbium-doped fiber laser based on graphene oxide (GO), employing a simplified Hummer's method to synthesize the GO via chemical oxidation of graphite flakes at room temperature. By dipping a fiber ferrule end face onto the GO suspension, GO is successfully coated onto the end face, making it a simple saturable absorption device. A stable Q-switched pulsed fiber laser is achieved with a low pump threshold of 9.5 mW at 980 nm. The pulse repetition rate ranges from 16.0 to 57.0 kHz. The pulse width and the pulse energy are studied and discussed.
(Relaxation oscillations and long pulse operation)
引用本文:
. [J]. Chin. Phys. Lett., 2013, 30(2): 24208-024208.
Y. K. Yap, N. M. Huang, S. W. Harun, H. Ahmad. Graphene Oxide-Based Q-Switched Erbium-Doped Fiber Laser. Chin. Phys. Lett., 2013, 30(2): 24208-024208.
2013, Vol. 30 
