Spectral control in multisection AlGaAs SQW superluminescentdiodes at 800 nm

It is shown that multielectrode pumping allows a significant increase in the output power of quantum well SLDs in the broad spectrum operating regime. More than 60 nm spectral width at output power ranges from 2 to 23 mW was obtained by two-electrode pumping of the active region of AlGaAs SQW SLD. The possibility of controlling the form of the SQW SLD spectrum by multielectrode pumping and central wavelength switching of a 20 nm FWHM (Gaussian profile) over 40 nm is shown. The coherence length of the SLDs estimated using the Mandel approach is 7 mm at 2 mW output, increasing to 11 mm at 23 mW.