Figure 2
From: Phosphorene quantum dot saturable absorbers for ultrafast fiber lasers
(a) The setup of a balanced twin-detector measurement, (b) Photograph of the microfiber deposited with PQDs, the upward and downward images show the integrated microfiber devices before and after injecting a 650 nm laser source, and the inset shows a zoom-in image of the device, (c) saturable absorption property of the PQD-SA device.
