Q-switched ytterbium doped fiber laser using multi-walled carbon nanotubes saturable absorber

作     者：N.Kasim A.H.H.Al-Masoodi F.Ahmad Y.Munajat H.Ahmad S.W.Harun 

作者机构：Advanced Photonics Science InstituteFaculty of ScienceUniversity Technology Malaysia Photonics Research CentreUniversity of Malaya Department of Electrical EngineeringFaculty of EngineeringUniversity of Malaya 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2014年第12卷第3期

页      面：41-44页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by Ministry of Higher Education under ERGS Grant scheme No.ER012-2012A 

主　　题：MWCNTs PEO length SA Q-switched ytterbium doped fiber laser using multi-walled carbon nanotubes saturable absorber 

摘      要：A Q-switched ytterbium-doped fiber laser （YDFL） is proposed and demonstrated using a newly developed multi-walled carbon nanotubes polyethylene oxide （MWCNTs-PEO） film as a passive saturable absorber （SA）. The saturable absorber 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 integrated into the laser cavity for Q-switching pulse generation. The laser generates a stable pulse operating at wavelength of 1060.2 nm with a threshold pump power of 53.43 mW. The YDFL generates a stable pulse train with repetition rates ranging from 7.92 to 24.27 kHz by varying 980-nm pump power from 53.42 to 65.72 mW. At 59.55-mW pump power, the lowest pulse width and the highest pulse energy are obtained at 12.18 μs and 143.5 n J, respectively.