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首页> 外文期刊>Optics Letters >Timing-jitter, optical, and mode-beating linewidths analysis on subpicosecond optical pulses generated by a quantum-dash passively mode-locked semiconductor laser
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Timing-jitter, optical, and mode-beating linewidths analysis on subpicosecond optical pulses generated by a quantum-dash passively mode-locked semiconductor laser

机译：量子破折号被动锁模半导体激光器产生的亚皮秒级光脉冲的定时抖动，光学和拍频线宽分析

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摘要

Timing-jitter measurements in optically generated subpicosecond pulses by a quantum-dash passively mode-locked semiconductor laser as a function of the bias current are reported. All the measurements are retrieved from a second-harmonic-generation frequency-resolved optical gating system. A decreasing trend in the pulse width and the associated timing jitter is found with the bias current. Additionally, the optical and mode-beating linewidths are analyzed in terms of both the mode wavelength and the bias current. From our results, we can conclude that once the optical modes are phase locked, the optical linewidth associated to every individual longitudinal mode of the device under test does not have a significant impact on the mode-beating signal on neither the pulse width nor its respective timing jitter.
机译：报告了量子点被动锁模半导体激光器在光学产生的亚皮秒脉冲中的定时抖动测量值与偏置电流的关系。所有测量值均从第二谐波产生的频率分辨光学门控系统获取。利用偏置电流发现了脉冲宽度和相关的时序抖动的下降趋势。此外，还根据模式波长和偏置电流来分析光学和模式脉动线宽。根据我们的结果，我们可以得出结论，一旦光学模式被锁相，与被测设备的每个纵向模式相关的光学线宽就不会对脉冲信号及其脉冲宽度的模式脉动信号产生重大影响定时抖动。

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