Recent advances in compound semiconductor technology

Markus Pessa; Harry M. Asonen

doi:10.1117/12.208114

1 September 1995 Recent advances in compound semiconductor technology

Markus Pessa, Harry M. Asonen

Author Affiliations +

Optical Engineering, Vol. 34, Issue 9, (September 1995). https://doi.org/10.1117/12.208114

Abstract

The fabrication of epitaxial compound semiconductors and optoelectronic devices at Tampere University of Technology is described. First, we determine the bandgap energies of technologically important quaternary alloys Ga_xIn_1-xAs_yP_1-y, grown by gas-source molecular beam epitaxy, which are lattice-matched to InP and GaAs throughout the entire composition ranges. Second, we discuss state-of-the art aluminum-free laser diodes intended for pumping light at λ = 980 nm into erbium-doped optical fiber amplifiers. Third, principles of a new kind of avalanche photodetector (APD), a "unipolar" APD, are discussed. Our attempt is to develop a compound semiconductor detector that could detect an event of single-photon absorption. Finally, we present a photovoltaic fiber optical power converter. This device is comprised of a series of photovoltaic cells and an integrated 980-nm data laser. It is designed to convert the fiber-coupled optical power launched by a transmitter laser at 780<λ<850 nm into electrical power.

Citation Download Citation

Markus Pessa and Harry M. Asonen "Recent advances in compound semiconductor technology," Optical Engineering 34(9), (1 September 1995). https://doi.org/10.1117/12.208114

Published: 1 September 1995

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