Simple dispersion estimate for single-section quantum-dash and quantum-dot mode-locked laser diodes.
Simple dispersion estimate for single-section quantum-dash and quantum-dot mode-locked laser diodes.
复制标题
单节量子冲刺和量子点锁模激光二极管的简单色散估计。
作者：
Seán Ó Dúill;S. Murdoch;R. Watts;R. Rosales;A. Ramdane;P. Landais;L. Barry
单段量子点锁模激光器（MLL）的光输出具有很强的群速度色散。基于仔细测量的光谱相位的脉冲从这些MLL，我们确认，在MLL光谱的两端的模式之间的群延迟的差异等于腔往返时间。这一观察使我们能够推导出一个经验公式的输出脉冲的累积色散的光谱范围和自由光谱范围的MLL。我们发现很好的协议与以前报道的量子破折号和量子点MLLs在广泛的操作条件下的色散测量。
The optical outputs of single-section quantum-dash and quantum-dot mode-locked lasers (MLLs) are well known to exhibit strong group velocity dispersion. Based on careful measurements of the spectral phase of the pulses from these MLLs, we confirm that the difference in group delay between the modes at either end of the MLL spectrum equals the cavity round-trip time. This observation allows us to deduce an empirical formula relating the accumulated dispersion of the output pulse to the spectral extent and free-spectral range of the MLL. We find excellent agreement with previously reported dispersion measurements of both quantum-dash and quantum-dot MLLs over a wide range of operating conditions.