通过40吉赫兹被动锁模量子点1毫米长法布里-珀罗激光二极管产生亚皮秒脉冲。

Sub-picosecond pulse generation by 40-GHz passively mode-locked quantum-dash 1-mm-long Fabry-Pérot laser diode.

作者信息

Latkowski Sylwester, Maldonado-Basilio Ramón, Landais Pascal

机构信息

School of Electronic Engineering, Dublin City University, Glasnevin, Dublin 9, Ireland.

出版信息

Opt Express. 2009 Oct 12;17(21):19166-72. doi: 10.1364/OE.17.019166.

DOI:10.1364/OE.17.019166

PMID:20372653

Abstract

Optical pulses at a repetition rate of 39.8 GHz have been observed in a dc-biased passively mode-locked quantum-dash Fabry-Pérot laser diode. The pulses generated by this diode are studied in the temporal and spectral domains using a second harmonic generation frequency-resolved optical gating system. By using a tunable band-pass filter, it is observed that the pulse width decreases as the number of lasing modes selected by the filter increases. Furthermore, by controlling the phase difference of the modes using a 450 m-long single mode fibre, a passive compression of the pulses is obtained. A minimum pulse width of 720 fs has been measured with this type of mode-locked Fabry-Pérot laser.

摘要

在直流偏置的被动锁模量子点法布里-珀罗激光二极管中观测到了重复频率为39.8 GHz的光脉冲。利用二次谐波产生频率分辨光闸系统在时域和频域对该二极管产生的脉冲进行了研究。通过使用可调谐带通滤波器，观察到随着滤波器选择的激射模式数量增加，脉冲宽度减小。此外，通过使用一根450米长的单模光纤控制模式的相位差，实现了脉冲的被动压缩。用这种类型的锁模法布里-珀罗激光器测得的最小脉冲宽度为720飞秒。