Data obtained by placing a multimodal interference filter inside a laser cavity, both with and without graphene

<p>The data shown here were obtained by coating a multimodal interference optical fiber filter with graphene. The data are divided into the following stages:</p> <ul> <li>Spectrum of the multimodal interference filter inside the laser cavity at different pump powers.</li> <li>Spectrum of the multimodal interference filter coated with graphene and PMMA inside the laser cavity at different pump powers.</li> <li>Spectrum of the multimodal interference filter coated with graphene inside the laser cavity at different pump powers.</li> </ul> <p>Additionally, the pulses generated by the laser cavity were obtained in the stages described above.</p>