Single-mode Er-doped fiber random laser with distributed Bragg grating feedback
Single-mode Er-doped fiber random laser with distributed Bragg grating feedback
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DOI：
10.1364/oe.17.000395
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发表时间：
2009-01-19
期刊：
影响因子：
3.8
通讯作者：
Mendez, E. R.
中科院分区：
文献类型：
--
作者：
Lizarraga, N.;Puente, N. P.;Mendez, E. R.
报道了基于随机间隔布拉格光栅的Er/Ge共掺单模光纤的一维随机激光器的实现。随机光栅阵列形成在以1535.5nm为中心的增益波长范围内具有高品质因数谐振的复杂腔。研究了不同光栅数下光栅阵列的反射谱和激光器的发射谱。实验结果与基于传输矩阵法的一维布拉格光栅阵列中光传输的数值模拟进行了定性比较。该系统在980 nm处泵浦，实验观察到的输出辐射呈现出典型的激光阈值行为作为泵浦功率的函数。我们发现，激光输出包含几个竞争的光谱模式。(C)2009年美国光学学会
We report the implementation of a one-dimensional random laser based on an Er/Ge co-doped single-mode fiber with randomly spaced Bragg gratings. The random grating array forms a complex cavity with high quality factor resonances in the range of gain wavelengths centered around 1535.5 nm. The reflection spectra of the grating array and the emission spectra of the laser are investigated for different numbers of gratings. The experimental results are compared qualitatively with numerical simulations of the light propagation in one-dimensional Bragg grating arrays based on a transfer matrix method. The system is pumped at 980 nm and the experimentally observed output radiation presents a typical laser threshold behavior as a function of the pump power. We find that the laser output contains several competing spectral modes. (C) 2009 Optical Society of America