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Integration of a Quantum Well Laser with AlGaAs/GaAs-HEMT Electronics

Published online by Cambridge University Press:  22 February 2011

W. Bronner ,
J. Hornung ,
K. Köhler ,
E. Olander  and
Z.-G. Wang
W. Bronner
Affiliation:
Fraunhofer-Institut ffir Angewandte Festkörperphysik, Tullastr.72, W-7800 Freiburg, Germany
J. Hornung
Affiliation:
Fraunhofer-Institut ffir Angewandte Festkörperphysik, Tullastr.72, W-7800 Freiburg, Germany
K. Köhler
Affiliation:
Fraunhofer-Institut ffir Angewandte Festkörperphysik, Tullastr.72, W-7800 Freiburg, Germany
E. Olander
Affiliation:
Fraunhofer-Institut ffir Angewandte Festkörperphysik, Tullastr.72, W-7800 Freiburg, Germany
Z.-G. Wang
Affiliation:
Fraunhofer-Institut ffir Angewandte Festkörperphysik, Tullastr.72, W-7800 Freiburg, Germany
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Abstract

In this presentation the various technology steps for the monolithic integration of GaAs quantum well lasers with Double Pulse Doped AlGaAs/GaAs/AlGaAs Quantum Well (DPDQW) E/D HEMT electronics on a single substrate in one process run are described. All layers are grown by molecular beam epitaxy. The laser structure, consisting of three 74 Å GaAs quantum wells between two AlGaAs cladding layers, are grown on top of the electronic structure. The laser mesas and contact areas are defined by a combined wet and dry etch process. Apart from the transistor gates which are exposed by electron beam lithography, all lithography steps are performed using contact printing. A two layer metallization is used to interconnect the devices whereby air-bridges are used to connect the laser mesas to the electronics. First results showed laser action of laser diodes of area 3 x 300 μm2 at a threshold current of less than 60 mA, as well as the operation of different electronic devices on wafers which have been processed in this way. These include a laser diode driver, and an optoelectronic receiver with a MSM photo diode, both devices operating at a data rate of 5 Gbit/sec. These results indicate that the process sequence described is suitable for the integration of laser diodes and HEMT electronics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 300: Symposium D1 – III-V Electronic and Photonic Device Fabrication and Performance , 1993 , 133
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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