Research on highly Yb3+-doped passive mode-locked fiber ring laser.

Authors :: Huang Xiu-Jiang
Sui Zhan
Liu Yong-Zhi
Li Ming-Zhong
Lin Hong-Huan
Wang Jian-Jun
Zhao De-Shuang
Li Xin
Chen Hai-Yan
Source :: Microwave & Optical Technology Letters; 5/5/2005, Vol. 45 Issue 3, p269-270, 2p, 1 Black and White Photograph, 1 Diagram, 1 Graph
Publication Year :: 2005
Abstract: Theoretical and experimental results on the self-starting passive mode-locked Yb fiber-ring laser generating short pulse are reported. The relations between the laser-cavity parameters and mode-locked pulse characteristics are discussed. 980-nm LD-pumped laser is used as the pump source and high-concentration Yb<superscript>3+</superscript>-doped fiber is adopted as the gain medium. Using the nonlinear polarization rotation (NPR) effect of the fiber, a self-starting stable mode-locked pulse is obtained, with a center wavelength of 1046 nm, a 3-dB bandwidth of 6.01 nm, and a 20-dB bandwidth of 16 nm. The mode-locked threshold power is 150 mW and output power is 26 mW with a 20-MHz repetition rate. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 269–270, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20792 [ABSTRACT FROM AUTHOR]