We report on a quantum dot laser having an emission spectrum as broad as $74.9\mathrm{nm}$ at 25°C in the 1.2–1.28 wavelength interval with a total pulsed output power of $750\mathrm{mW}$ in single lateral mode regime and the average spectral power density of $>10\mathrm{mW}∕\mathrm{nm}$ . A significant overlap and approximate equalization of the ground-state and the excited-state emission bands in the laser’s spectrum is achieved by means of intentional inhomogeneous broadening of the quantum dot energy levels.

© 2007 Optical Society of America

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