High Power GaN-Based Blue Superluminescent Diode Exceeding 450 mW

We demonstrate a high-power blue emitting superluminescent diode (SLD) with a tilted-facet configuration. An optical power of457 mW with a broad spectral bandwidth of 6.5 nm was obtained under pulsed current injection of 1A, leading to a large power-bandwidth product of ∼2970 mW-nm.