Single transverse mode operation of long wavelength(~1.3 µm)InAs GaAs quantum dot laser

Single transverse mode continuous wave (CW) operation up to 110 mW has been achieved for narrow stripe ridge waveguide laser diodes based on InAsGaAs quantum dots emitting near 1.3 µm. A total output power of 330 mW has been obtained. The maximal modal gain of the ground state transition was measured to be 12 cm-1.