A multi-wavelength compact ultrafast laser based on a single-mode waveguide inscribed in Nd:YAG and graphene saturable absorber is developed. By changing the pump parameters, we demonstrate single-, dual- and multi- wavelength mode-locking regimes. Accurate control of intracavity losses provides stable CW passive mode-locking at a wavelength of 1064nm and dual-wavelength mode-locking at 1061 and 1064nm with a pulse repetition rate of 9.5GHz.

中文翻译：

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波长可切换 9.5 GHz 石墨烯锁模波导激光器

开发了一种基于刻在 Nd:YAG 和石墨烯可饱和吸收体中的单模波导的多波长紧凑型超快激光器。通过改变泵浦参数，我们展示了单、双和多波长锁模机制。精确控制腔内损耗可在 1064nm 波长提供稳定的 CW 无源锁模，在 1061 和 1064nm 提供双波长锁模，脉冲重复率为 9.5GHz。