75 W single-frequency, thulium-doped fiber laser at 2.05 µm. (5th August 2015)

• Record Type: Journal Article
• Authors: Li, Lei; Zhang, Bin; Yin, Ke; Hou, Jing
• Is Part Of: Laser physics letters. Volume 12:Number 9(2015:Sep.)
• Publication Date: 2015-08-05
• Subjects: thulium-doped fiber laser -- single frequency -- high average power; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/9/095103
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We demonstrated a high-power, single-frequency (SF), all-fiber-format, thulium-doped master oscillator power amplifier (MOPA) system. The MOPA is seeded by a distributed feedback (DFB) diode laser and yields 75 W of SF laser output at a central wavelength of 2050.5 nm with a linewidth of 1 MHz. There is no indication of stimulated Brillouin scattering or gain saturation observed at the maximum output power, which means the output power was only limited by the available pump power. This is the highest output power, to the best of our knowledge, in the SF all-fiber thulium-doped MOPA at 2050 nm.