engleski

Low threshold, electrically injected InGaAsP (1.3 um) vertical cavity lasers on GaAs substrates

Electrically injected long-wavelength vertical cavity lasers (VCLs) employing InGaAsP (1.3 um) active regions fused to GaAs-AlAs mirrors on GaAs substrates are demonstrated. The lasers operate pulsed at room temperature (300 K) with a threshold current of 9 mA and a threshold current density of 9.5 kA/cm/sup 2/. These devices operate CW (continuous wave) at temperatures as high as 230 K ; the CW threshold current at 230 K is 3.6 mA. The use of the GaAs-AlAs mirror makes the device more mechanically robust, improving the thermal conductivity and reducing problems with nonuniform injection.

Gallium arsenide, Vertical cavity surface emitting lasers, Mirrors, Surface emitting lasers, Threshold current, Temperature, Quantum well lasers, Dielectric substrates, Indium phosphide, Laser transitions

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