Pulse shaping, high average power narrow linewidth Er, Yb co-doped fiber amplifier

被引：1

作者：

Wang, Yunpeng ^{[1
]}

Li, Yang ^{[1
]}

Zhang, Dongming ^{[1
]}

Xiong, Chen ^{[1
]}

Li, Pingxue ^{[1
]}

机构：

[1] Beijing Univ Technol, Inst Laser Engn, Fac Mat & Mfg, Beijing, Peoples R China

来源：

FRONTIERS IN PHYSICS | 2023年 / 11卷

基金：

中国国家自然科学基金;

关键词：

narrow linewidth; fiber amplifier; very-large-mode-area active fiber; high average power; pulse shaping; 1.5; MU-M; HIGH-ENERGY; DOPPLER LIDAR; PEAK POWER; LASER; MOPA; AMPLIFICATION; MJ;

D O I：

10.3389/fphy.2023.1330573

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a high repetition rate, high average power narrow-linewidth fiber amplifier at 1.55 mu m eye-safe waveband by using a very-large-mode-area active fiber doping Er and Yb, having a 60-mu m-diameter core and a 600-mu m-diameter inner cladding. A maximum average power reaches 16 W at a 10 kHz repetition rate for 600 ns pulses in the stimulated Brillouin scattering (SBS) free operation, which calculates to a 1.6 mJ pulse energy and 2.7 kW peak power. In addition, the peak power rises to 4.9 kW with 148 ns pulses at the onset of SBS. The signal peak is located at 1,551.15 nm with a 36 dB signal-to-noise ratio (SNR). In order to eliminate the pulse steepening, the pulse shaping technology using a triangular-like wave with a slower rising edge is applied on the input pulses. The half-width of the frequency-intensity spectrum from high-average-power fiber amplifier is about 1.02 MHz, approaching the Fourier transform limit.

引用

页数：7

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