1.  Tongxiao Jiang, Aimin Wang, Guizhong Wang, Wei Zhang, Fuzeng Niu, Chen Li,and Zhigang Zhang, 
Tapered photonic crystal fiber for simplified Yb:fiber laser frequency comb with low pulse energy and robust fceo signals
Opt. Express 22, 1835-1841 (2014).
 

           2.  Chen Li, Guizhong Wang, Tongxiao Jiang, Peng Li, Aimin Wang, and Zhigang Zhang, 
Femtosecond amplifier-similariton Yb:fiber laser at 616 MHz repetition rate
Opt. Lett. 39, 1831-1833 (2014).
 

           3.  Guizhong Wang, Fei Meng, Chen Li, Tongxiao Jiang, Aimin Wang, Zhanjun Fang and Zhigang Zhang, 
500 MHz spaced Yb:fiber laser frequency comb without amplifiers
Opt. Lett. 39, 2534–2536 (2014).
 

           4.   Xiang Gao, Weijian Zong, Bingying Chen, Jian Zhang, Chen Li, Yizhou Liu, Aimin Wang, Yanrong Song and Zhigang Zhang, 
Core-pumped femtosecond Nd:fiber laser at 910nm-935nm band
Opt. Lett. 39, 4404-4407 (2014)
 

           5.   Fuzeng Niu, Tongxiao Jiang, Shunnan Lai, Wei Zhang, Aimin Wang and Zhigang Zhang, 
Green-light- enhanced super-continuum generation in a tapered photonic crystal fiber for efficient fceo detection of Yb:fiber laser frequency combs
Electron. Lett., 50, 1859-1860 (2014)
 

           6.   Dong Hou, Jiutao Wu, Shuangyou Zhang, Quansheng Ren, Zhigang Zhang, Jianye Zhao, 
A stable frequency comb directly referenced to rubidium electromagnetically induced transparency and two-photon transitions
Appl. Phys. Lett. 104, 111104-5 (2014)
 

           7.  Jiutao Wu, Dong Hou, Zhengyu Qin, Zhigang Zhang, and Jianye Zhao, 
Observation of Rb two-photon absorption directly excited by an erbium-fiber-laser-based optical frequency comb via spectral control
Phys. Rev. A 89, 041402 (2014)