Title :
Hybrid mirror VCSEL with sub-100 μA threshold current emitting at 850 nm wavelength
Author :
Langenfelder, T. ; Grothe, H.
Author_Institution :
Lehrstuhl fur Allgemeine Elektrotechnik und Angewandte Elektronik, Tech. Univ. Munchen, Germany
fDate :
10/15/1998 12:00:00 AM
Abstract :
The authors report a hybrid mirror GaAs quantum-well vertical-cavity surface-emitting laser with intracavity contacts, an n-side AlAs/GaAlAs and a p-side SiO2/Si3N4 distributed Bragg reflector. Selectively oxidised AlAs is used for current confinement under the top mirror. Record low threshold currents of 88 and 75 μA are measured at an emission wavelength of 850 nm for circular devices with 6 and 1.8 μm diameter, respectively
Keywords :
III-V semiconductors; aluminium compounds; distributed Bragg reflector lasers; gallium arsenide; quantum well lasers; surface emitting lasers; 1.8 micron; 6 micron; 75 muA; 850 nm; 88 muA; GaAs-AlGaAs-AlAs; circular devices; current confinement; distributed Bragg reflector; emission wavelength; hybrid mirror VCSEL; intracavity contacts; quantum-well vertical-cavity surface-emitting laser; threshold current;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981403