Q-switched dual-wavelength fiber laser using a graphene oxide saturable absorber and singlemode–multimode–singlemode fiber structure
Document Type
Article
Publication Date
1-1-2016
Abstract
A Q-switched dual-wavelength fiber laser using a graphene oxide-based saturable absorber to generate the desired output pulses is proposed and demonstrated. The system utilizes a singlemode-multimode-singlemode fiber structure to control the net losses in the cavity so that only two dominant wavelengths are allowed to oscillate. The proposed system is capable of generating an output with a high repetition rate of 27.1 kHz and a narrow pulse width of 4.03 μs. The output pulses also have average output power and pulse energy of up to 0.5 mW and 18.5 nJ, respectively. The 1st harmonic obtained has a high signal-to-noise ratio of 33.2 dB, indicating a highly stable pulse output with minimum mode hopping.
Keywords
Dual-wavelength, Graphene oxide, Q-switched, Saturable absorber, Singlemodemultimodesinglemode fiber
Divisions
Science
Funders
Grants LRGS (2015) NGOD / UM / KPT, GA 010-2014 (ULUNG) and RU 007/2015
Publication Title
Laser Physics Letters
Volume
13
Issue
10
Publisher
John Wiley & Sons