Super Luminescence Diodes

Superluminescent diodes (SLEDs) are broadband semiconductor light sources that combine spontaneous emission with optical amplification. They produce spatially coherent light with relatively flat spectra spanning tens of nanometres, which can be efficiently coupled into optical fibres. SLEDs are ideal for various applications, including optical coherence tomography, interferometry, biomedical imaging, and metrology. Multiple SLEDs can be integrated into a single butterfly package to create broadband 'white light' sources. These combined sources can span up to 200 nm of bandwidth from a single fibre output, enabling compact spectroscopy applications.