Electrically driven random lasing from a modified Fabry–Pérot laser diode

Random lasers are intriguing devices with promising applications as light sources for imaging, sensing, super-resolution spectral analysis or complex networks engineering. can be obtained from optically pumped dyes, optical fibres and crystals electrically semiconductor heterostructures. Semiconductor random usually fabricated by introducing scattering defects into the active layer, adding a degree of complexity to fabrication process losing ease realization potentially offered disordered structures. The ready availability lasers, avoiding costly approach, would boost use these in research applications. Here we realize an incoherent laser simply processing output mirror off-the-shelf Fabry–Pérot diode via controlled ablation. Optical feedback provided intact back ablated front results multimode lasing low spatial coherence angular patterns. This result constitutes proof principle future ground-breaking technology developments field lasers. Researchers present cost-effective approach make driven modifying commercially available diodes.