GaAs devices and integrated circuits have emerged as leading contenders
for ultra-high-speed applications. This book is intended to be a
reference for a rapidly growing GaAs community of researchers and
graduate students. It was written over several years and parts of it
were used for courses on GaAs devices and integrated circuits and on
heterojunction GaAs devices developed and taught at the University of
Minnesota. Many people helped me in writing this book. I would like to
express my deep gratitude to Professor Lester Eastman of Cornell
University, whose ideas and thoughts inspired me and helped to determine
the direction of my research work for many years. I also benefited from
numerous discussions with his students and associates and from the very
atmosphere of the pursuit of excellence which exists in his group. I
would like to thank my former and present co-workers and colleagues-Drs.
Levinstein and Gelmont of the A. F. Ioffe Institute of Physics and
Technology, Professor Melvin Shaw of Wayne State University, Dr.
Kastalsky of Bell Communi- cations, Professor Gary Robinson of Colorado
State University, Professor Tony Valois, and Dr. Tim Drummond of Sandia
Labs-for their contributions to our joint research and for valuable
discussions. My special thanks to Professor Morko.;, for his help, his
ideas, and the example set by his pioneering work. Since 1978 I have
been working with engineers from Honeywell, Inc.-Drs.