Capua Amir, Saal Abigael, Karni Ouri, Eisenstein Gadi, Reithmaier Johann Peter, Yvind Kresten
Department of Electrical Engineering, Technion,Haifa,32000, Israel.
Opt Express. 2012 Jan 2;20(1):347-53. doi: 10.1364/OE.20.000347.
We describe direct measurements at a high temporal resolution of the changes experienced by the phase and amplitude of an ultra-short pulse upon propagation through an inhomogenously broadened semiconductor nanostructured optical gain medium. Using a cross frequency-resolved optical gating technique, we analyze 150 fs-wide pulses propagating along an InP based quantum dash optical amplifier in both the quasi-linear and saturated regimes. For very large electrical and optical excitations, a second, trailing peak is generated and enhanced by a unique two-photon-induced amplification process.
我们描述了在高时间分辨率下对超短脉冲在通过非均匀展宽的半导体纳米结构光学增益介质传播时其相位和幅度所经历变化的直接测量。使用交叉频率分辨光学门控技术，我们分析了在准线性和饱和状态下沿基于InP的量子点光学放大器传播的150飞秒宽的脉冲。对于非常大的电激发和光激发，会通过一个独特的双光子诱导放大过程产生并增强第二个拖尾峰。
