Passively Q-Switched EDFL Using a Multi-Walled Carbon Nanotube Polymer Composite Based on a Saturable Absorber  

作　　者：F. Ahmad H. Haris R. M. Nor N. R. Zulkepely H. Ahmad S. W. Harun 

机构地区：[1]Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia [2]Photonics Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia [3]Department of Physics, University of Malaya, Kuala Lumpur 50603, Malaysia

出　　处：《Chinese Physics Letters》2014年第3期69-72,共4页中国物理快报（英文版）

摘　　要：A stable passive Q-switched erbium-doped fiber laser （EDFL） operating at 1563.5 nm is demonstrated by using a multi-walled carbon nanotube （MWCNT） polymer composite film based saturable absorber for the first time. The composite is prepared by mixing the MWCNTs homogeneous solution into a dilute PEO polymer solution before it is left to dry at room temperature to produce thin film. Then the film is sandwiched between two FC/PC fiber connectors and is integrated into the laser cavity for Q-switching pulse generation. The EDFL generates a stable pulse train with repetition rates ranging from 4.5 kHz to 20.0 kHz by varying the 1480 nm pump power from 35 mW to 53 mW. At the 53 mW pump power, the pulse width and pulse energy are 8.8 μs and 15.3 nJ, respectively.A stable passive Q-switched erbium-doped fiber laser （EDFL） operating at 1563.5 nm is demonstrated by using a multi-walled carbon nanotube （MWCNT） polymer composite film based saturable absorber for the first time. The composite is prepared by mixing the MWCNTs homogeneous solution into a dilute PEO polymer solution before it is left to dry at room temperature to produce thin film. Then the film is sandwiched between two FC/PC fiber connectors and is integrated into the laser cavity for Q-switching pulse generation. The EDFL generates a stable pulse train with repetition rates ranging from 4.5 kHz to 20.0 kHz by varying the 1480 nm pump power from 35 mW to 53 mW. At the 53 mW pump power, the pulse width and pulse energy are 8.8 μs and 15.3 nJ, respectively.

分 类 号：TN248.1[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]