High power pulsed fiber MOPA system incorporating electro-optic modulator based adaptive pulse shaping.
High power pulsed fiber MOPA system incorporating electro-optic modulator based adaptive pulse shaping.
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DOI：
10.1364/oe.17.020927
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发表时间：
2009-11
期刊：
影响因子：
3.8
通讯作者：
A. Malinowski;K. Vu;K. Chen;J. Nilsson;Y. Jeong;S. Alam;D. Lin;D. Richardson
中科院分区：
文献类型：
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作者：
A. Malinowski;K. Vu;K. Chen;J. Nilsson;Y. Jeong;S. Alam;D. Lin;D. Richardson
我们演示了使用电光调制器的主动脉冲整形，以补偿高功率掺Yb光纤放大器链中增益饱和引起的脉冲整形效应，并产生各种自定义的输出脉冲形状。脉冲能量为mJ，脉冲波形为方形、阶梯形和平滑形。使用调制器来整形脉冲而不是直接调制二极管驱动电流，允许我们消除由于激光器启动动态而引起的不期望的瞬变。所需的整形基于放大器性能的简单测量来计算，并且不需要放大器动态的详细建模。
We demonstrate active pulse shaping using an Electro-Optic Modulator in order to compensate the pulse shaping effects caused by Gain Saturation in a high power Yb doped fiber amplifier chain and to generate various custom-defined output pulse shapes. Square, step and smooth pulse shapes are achieved, with mJ pulse energies. Use of a modulator to shape pulses rather than direct modulation of the diode drive current allows us to eliminate undesired transients due to laser start up dynamics. The required shaping is calculated based on a simple measurement of amplifier performance, and does not require detailed modeling of the amplifier dynamics.