#Y2021 #Laser A superluminescent diode (SLED or SLD) is an edge-emitting semiconductor light source based on superluminescence. It combines the high power and brightness of laser diodes with the low coherence of conventional light-emitting diodes. Its emission optical bandwidth, also described as full-width at half maximum, can range from 5 up to 750 nm. 激光器型低相干照明 [Superluminescent Diodes](https://www.rp-photonics.com/superluminescent_diodes.html)