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High-power GaInAs strained quantum well lasers with an emission wavelength of 0.98 mu m, suitable for Er3+-doped fibre amplifier pumping, have been fabricated. A threshold current of 15 mA and a peak output power as high as 85 mW have been obtained for the ridge waveguide structure with AR/HR facet coating. Highly efficient pumping for the 1.536 mu m signals has been confirmed.
Date of Publication: 9 Nov. 1989