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A kind of novel high power quantum well laser with an integrated passive waveguide has been designed and fabricated to prevent the high photo density region from concentrating in the transverse waveguide center in the diode laser cavity. The new structure has a smooth near|field profile of the fundamental transverse mode in the co|waveguide center. According to the results of the 100μm|wide and 800μm|long lasers, we can achieve that the light output power is 2 6W at wavelength of 980nm (at 19℃ and under CW operating condition). The threshold current density to be 320A/cm+2, the slope efficiency to be 0 9W/A and the resistance in series to be 0 15Ω can be measured through the facet|coated devices with LR/HR being 0 1/0 95.
A kind of novel high power quantum well laser with an integrated passive waveguide has been designed and fabricated to prevent the high photo density region from concentrating in the transverse waveguide center in the diode laser cavity. The new structure has a smooth near | field profile of the fundamental transverse mode in the co | waveguide center. According to the results of the 100 μm | wide and 800 μm | long lasers, we can achieve that the light output power is 2 6W at wavelength of 980 nm ( at 19 ℃ and under CW operating condition). The threshold current density to be 320A / cm + 2, the slope efficiency to be 0 9W / A and the resistance in series to be 0 15Ω can be measured through the facet coated devices with LR / HR being 0 1/0 95.