Cavity resonators - Charge carriers - Electric current distribution - Electron energy analyzers - Gain control - Semiconducting gallium arsenide - Semiconducting indium phosphide - Semiconducting silicon - Semiconductor doping - Semiconductor growth - Semiconductor quantum wells - Substrates;
D O I:
10.1109/68.329626
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
We developed 1.3 mum n-type modulation-doped strained-layer quantum-well lasers. Modulation-doped lasers with long cavities (low threshold gain) exhibit much lower threshold current densities than conventional lasers with undoped barrier layers. The lowest threshold current density we obtained was 250 A/cm2 for 1500 mum long lasers with five quantum wells. The estimated threshold current density for an infinite cavity length was 38 A/cm2/well. This is the lowest value for InGaAsP/InGaAsP and InGaAs/InGaAsP quantum well lasers to our knowledge.