15瓦高输出信噪比、千赫兹线宽、1.6微米波长的线性偏振全光纤单频主振荡功率放大器

15 W high OSNR kHz-linewidth linearly-polarized all-fiber single-frequency MOPA at 1.6 μm.

作者信息

Yang Changsheng, Guan Xianchao, Zhao Qilai, Lin Wei, Li Can, Gan Jiulin, Qian Qi, Feng Zhouming, Yang Zhongmin, Xu Shanhui

出版信息

Opt Express. 2018 May 14;26(10):12863-12869. doi: 10.1364/OE.26.012863.

DOI:10.1364/OE.26.012863

PMID:29801319

Abstract

A 1603 nm high optical signal-to-noise ratio (OSNR) kHz-linewidth linearly-polarized all-fiber single-frequency master-oscillator power amplifier (MOPA) is demonstrated. To suppress the amplified spontaneous emission from Yb/Er ions with the customized filters and optimize the length of the double cladding active fiber, an over 15 W stable single-longitudinal-mode laser is achieved with an OSNR of >70 dB. A measured laser linewidth of 4.5 kHz and a polarization-extinction ratio of >23 dB are obtained at the full output power. This L-band high-power single-frequency MOPA is promising for high-resolution molecular spectroscopy and pumping of Tm-doped or Tm/Ho co-doped laser.

摘要

展示了一种1603纳米高光学信噪比（OSNR）、千赫兹线宽的线性偏振全光纤单频主振荡功率放大器（MOPA）。通过定制滤波器抑制Yb/Er离子的放大自发辐射，并优化双包层有源光纤的长度，实现了超过15瓦的稳定单纵模激光器，其OSNR大于70分贝。在全输出功率下，测得的激光线宽为4.5千赫兹，偏振消光比大于23分贝。这种L波段高功率单频MOPA有望用于高分辨率分子光谱以及Tm掺杂或Tm/Ho共掺杂激光器的泵浦。