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Spectra of the EC laser displaying the peak linearly tuned (full circles) in wavelength with the angular position of the blazed grating. The LD had a length of and a width of . Simultaneously, spontaneous emission of the QD ensemble emerges.
curve of the EC laser at demonstrating a similar behavior to the uncoated LD by itself. The LD of Fig. 1 was used here. The inset shows the external differential quantum efficiency and the series resistance as a function of laser wavelength.
Threshold current density as a function of laser wavelength for different LD lengths and widths as denoted by the different symbols. An upper limit for the injected current has been set to to avoid damaging the LD.
Tuning range of the EC laser as a function of LD width for two different lengths. The error bars denote the inaccuracy of the individual experiment, since at most only two LDs have been measured for each case. Black lines are guides for the eye.
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