A semiconductor laser with an external fiber cavity based on quantum-well superluminescent diode and tunable acousto-optic filter is investigated. The-tuning range of 60nm, instant linewidth below 0.1 nm and output power of several mW ex SM fiber are obtained. Sweep frequency of up to 200 Hz is demonstrated. The prototype of a portable light source of this kind is manufactured.
Two novel high-brightness broadband light sources based on quantum-well superluminescent diodes for optical coherence tomography and other applications with record CW output power and spectral bandwidth are described.
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