Optically controlled in-line graphene saturable absorber for the manipulation of pulsed fiber laser operation

被引：22
作者：
Gene, Jinhwa [1 ]
Park, Nam Hun [2 ,3 ]
Jeong, Hwanseong [2 ,3 ]
Choi, Sun Young [2 ,3 ]
Rotermund, Fabian [1 ,2 ,3 ]
Yeom, Dong-Il [2 ,3 ]
Kim, Byoung Yoon [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 305701, South Korea
[2] Ajou Univ, Dept Phys, Suwon 443749, South Korea
[3] Ajou Univ, Dept Energy Syst Res, Suwon 443749, South Korea
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 19期
基金：
新加坡国家研究基金会;
关键词：
EVANESCENT-FIELD INTERACTION; PASSIVE-MODE-LOCKING; OPTOELECTRONICS; PHOTONICS; MODULATOR;
D O I：
10.1364/OE.24.021301
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate an optically tunable graphene saturable absorber to manipulate the laser operation in pulsed fiber laser system. Owing to the strongly enhanced evanescent field interaction with monolayer graphene, we could realize an efficient control of modulation depth in the graphene saturable absorber by optical means through cross absorption modulation method. By integrating the tunable graphene saturable absorber into the fiber laser system, we could switch the laser operation from Q-switching through Q-switched mode-locking to continuous wave mode-locking by adjusting only the optical power of the control beam. In addition, we realized a hybrid Q-switching of fiber laser by periodical modulation of the absorption of the graphene saturable absorber, where we observed that the repetition rate of the Q-switched laser could be continuously tuned according to the modulation frequency of the applied external signal. (C) 2016 Optical Society of America
引用
收藏
页码：21301 / 21307
页数：7
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