90.4-W all-fiber single-frequency polarization-maintained 1083-nm MOPA laser employing ring-cavity single-frequency seed oscillator

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（3）
• 页码范围: 47-50
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201210.031402

摘要

A high-power all-fiber single-frequency polarization-maintained (PM) laser operating at 1083 nm is demonstrated using a master oscillator power amplifier (MOPA) structure.The seed source of this MOPA laser system is an in-house-built ring-cavity fiber oscillator.Four-stage amplification configuration is employed,in which the maximal output power of the main amplifier is 90.4 W,corresponding to a conversion efficiency of 72.5％.The polarization extinction ratio of the output light is 13 dB.The amplified spontaneous emission is suppressed by a factor of over 25 dB,and no stimulated Brillouin scattering effect is observed when a large-mode-area and high absorption coefficient PM gain fiber is employed.