Chen Hung-Wen, Lim JinKang, Huang Shu-Wei, Schimpf Damian N, Kärtner Franz X, Chang Guoqing
Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts 02139, USA.
Opt Express. 2012 Dec 17;20(27):28672-82. doi: 10.1364/OE.20.028672.
We both theoretically and experimentally investigate the optimization of femtosecond Yb-doped fiber amplifiers (YDFAs) to achieve high-quality, high-power, compressed pulses. Ultrashort pulses amplified inside YDFAs are modeled by the generalized nonlinear Schrödinger equation coupled to the steady-state propagation-rate equations. We use this model to study the dependence of compressed-pulse quality on the YDFA parameters, such as the gain fiber's doping concentration and length, and input pulse pre-chirp, duration, and power. The modeling results confirmed by experiments show that an optimum negative pre-chirp for the input pulse exists to achieve the best compression.
我们从理论和实验两方面研究了飞秒掺镱光纤放大器（YDFA）的优化，以实现高质量、高功率的压缩脉冲。YDFA内部放大的超短脉冲由与稳态传播速率方程耦合的广义非线性薛定谔方程建模。我们使用该模型研究压缩脉冲质量对YDFA参数的依赖性，如增益光纤的掺杂浓度和长度，以及输入脉冲的预啁啾、持续时间和功率。实验证实的建模结果表明，存在一个最佳的输入脉冲负预啁啾以实现最佳压缩。
