We present a passively mode-locked all-fibre ring laser, working in the near-infrared region. The burst of multiple pulses generation is achieved by modifying the transmission output of the saturable absorber. Consequently, multiple modes are stimulated within the laser cavity and multiple wavelengths of operation from 1038 to 1082 nm are accomplished. Furthermore, average power and pulse energy, up to 3.48 mW and 42.9 nJ, are measured and validated. The laser exhibits high-power and wavelength stability at room temperature. In addition, the Raman effect is detected by increasing the power of the pump and up to three stokes are reached; therefore, a broadband spectrum of 140 nm is observed by changing the state of polarization within the cavity.

中文翻译：

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在被动锁模光纤环形激光器中通过多模干涉产生猝发脉冲

我们提出了一种在近红外区域工作的无源锁模全光纤环形激光器。通过修改可饱和吸收器的发射输出，可实现多脉冲的突发。因此，在激光腔内激发了多种模式，并实现了1038至1082 nm的多种工作波长。此外，测量并验证了高达3.48 mW和42.9 nJ的平均功率和脉冲能量。该激光器在室温下具有高功率和波长稳定性。另外，通过增加泵的功率来检测拉曼效应，并且可以达到三个冲程。因此，通过改变空腔内的偏振态，可以观察到140 nm的宽带光谱。