A high-efficiency fiber laser at 1018 nm using homemade Yb-doped phosphosilicate fiber is demonstrated. The fiber shows blueshifted emission spectrum compared to Yb-doped aluminosilicate fiber, and is considered favorable for the short wavelength Yb-doped fiber laser. With a 7 m gain fiber, up to 22.8 W output at 1018 nm is achieved with an optical efficiency of 53%. The amplified spontaneous emission at 1030 nm is suppressed to 50 dB below the 1018 nm laser. This work shows that highly-efficient fiber laser at 1018 nm can be obtained with Yb-doped phosphosilicate fiber.
© 2012 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: June 27, 2012
Revised Manuscript: September 4, 2012
Manuscript Accepted: September 4, 2012
Published: October 10, 2012
Jianhua Wang, Gui Chen, Lei Zhang, Jinmeng Hu, Jinyan Li, Bing He, Jinbao Chen, Xijia Gu, Jun Zhou, and Yan Feng, "High-efficiency fiber laser at 1018 nm using Yb-doped phosphosilicate fiber," Appl. Opt. 51, 7130-7133 (2012)