A superluminescent diode is a high-power LEDs that are built around a PN junction embedded in an optical waveguide. When electrically biased in the forward direction, they exhibit optical gain and generate amplified spontaneous emission over a wide range of wavelengths. An SLD light source has the output power similar to laser diode, the wide oscillation spectrum width of an LED (Light Emitting Diode), and low coherence.
Superluminescent diodes are a type of device that can bridge the gap between light-emitting diodes (LEDs) and laser diodes. A light generation method based on amplified spontaneous emission promotes the intense beam of the light source and the efficient use of light. Simultaneously, the light’s low time coherence reduces interference effects, which are undesirable in applications such as Optical Coherence Tomography.
