Experimental investigation on Q-switching and Q-switched mode-locking operation in gold nanorods-based erbium-doped fiber laser  

作　　者：汪徐德 赵年 刘浩 汤瑞 朱艳芳 薛建平 罗智超 罗爱平 徐文成 

机构地区：[1]School of Physics and Electronic Information, Huaibei Normal University [2]Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University [3]School of Life Sciences, Huaibei Normal University [4]Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques,South China University of Technology

出　　处：《Chinese Optics Letters》2015年第8期54-58,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61378036,61307058,11304101,11074078,and 11474108);the Ph D Start-Up Fund of the Natural Science Foundation of Guangdong Province,China(Grant No.S2013040016320);the Scientific Research Foundation of the Graduate School of South China Normal University,China(Grant No.2014bsxm06);the Zhujiang New-Star Plan of Science and Technology in Guangzhou City(Grant No.2014J2200008);the Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques(South China University of Technology)

摘　　要：We report on the generation of Q-switched and Q-switched mode-locked （QML） pulses in an erbium-doped fiber ring laser by using a polyvinyl alcohol （PVA） -based gold nanorod （GNR） saturable absorber （SA）. The PVA- based GNR SA has a modulation depth of -4.8% and a non-saturable loss of -26.9% at 1.5 μm. A Q-switched pulse train with a repetition rate varying from 18.70 to 39.85 kHz and a QML pulse train with an envelope repetition rate tuning from 20.31 to 31.50 kHz are obtained. Moreover, the lasing wavelengths of the Q-switched pulses can be flexibly tuned by introducing a narrow bandwidth, tunable filter into the laser cavity. The results demonstrate that the GNRs exhibit good optical performance and can find a wide range of applications in the field of laser technology.We report on the generation of Q-switched and Q-switched mode-locked （QML） pulses in an erbium-doped fiber ring laser by using a polyvinyl alcohol （PVA） -based gold nanorod （GNR） saturable absorber （SA）. The PVA- based GNR SA has a modulation depth of -4.8% and a non-saturable loss of -26.9% at 1.5 μm. A Q-switched pulse train with a repetition rate varying from 18.70 to 39.85 kHz and a QML pulse train with an envelope repetition rate tuning from 20.31 to 31.50 kHz are obtained. Moreover, the lasing wavelengths of the Q-switched pulses can be flexibly tuned by introducing a narrow bandwidth, tunable filter into the laser cavity. The results demonstrate that the GNRs exhibit good optical performance and can find a wide range of applications in the field of laser technology.

关 键 词：ERBIUM Fiber lasers Gold Laser applications Laser mode locking Locks (fasteners) Mode locked fiber lasers NANORIBBONS NANORODS Pulse repetition rate Q switched lasers Ring lasers Saturable absorbers 

分 类 号：TN248[电子电信—物理电子学]