1. High-power SLED delivers broad spectrum

    A superluminescent LED has for the first time been engineered to exhibit high output power as well as a broadband emission spectrum. By carefully controlling the annealing process parameters, a team from the UK and China has successfully fabricated a quantum-dot (QD) based SLED that has the sought-after combination of high output power and broadband emission. The novel emitter has a bandwidth of 146 nm and a continuous-wave output power of 15 mW at room temperature (Optics Letters 33 1210). "Although similar bandwidths have been reported at longer wavelengths, we have achieved a broad emission spectrum centered at 980 nm ...
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