Modulation-doped Field-effect Transistors


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Modulation-doped Field Effect Transistors for High-power Microwave Applications


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The need for high-power, low-noise transistors operating at frequencies of 1GHz and above has accelerated over the past several years, because applications in consumer markets, including telecommunications products, have increased dramatically. Transistors in the silicon system are having difficulty providing the high-power, low-noise characteristics at operation above 1 GHz. Transistors based on InP and GaAs, which include HBTs, MESFETs, and HEMTs, have proven to be excellent devices and can provide high-power, low-noise capabilities at frequencies of 100 GHz and beyond. Issues of importance for high-power microwave transistors include breakdown mechanisms, linearity, and material selection.










Modulation-doped Field-effect Transistors


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Microwave Field-effect Transistors


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Principles and Technology of MODFETs


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An acknowledged world authority on modulation doped field effect transistors (MODFETS) offers a detailed comparison of MODFETS performance--both as microwave and digital devices--with other structures. Concentrates on basic aspects of design and measurement in electronic engineering. Introductory material on heterojunction and semiconductor physics include crystalline structures, dynamics of interfaces, carrier densities, band discontinuities plus the treatment of stress and strain and their effect on the band structures.




Applied Optics Fundamentals and Device Applications


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How does the field of optical engineering impact biotechnology? Perhaps for the first time, Applied Optics Fundamentals and Device Applications: Nano, MOEMS, and Biotechnology answers that question directly by integrating coverage of the many disciplines and applications involved in optical engineering, and then examining their applications in nanobiotechnology. Written by a senior U.S. Army research scientist and pioneer in the field of optical engineering, this book addresses the exponential growth in materials, applications, and cross-functional relevance of the many convergent disciplines making optical engineering possible, including nanotechnology, MEMS, (MOEMS), and biotechnology. Integrates Coverage of MOEMS, Optics, and Nanobiotechnology—and Their Market Applications Providing an unprecedented interdisciplinary perspective of optics technology, this book describes everything from core principles and fundamental relationships, to emerging technologies and practical application of devices and systems—including fiber-optic sensors, integrated and electro-optics, and specialized military applications. The author places special emphasis on: Fiber sensor systems Electro-optics and acousto-optics Optical computing and signal processing Optical device performance Thin film magnetic memory MEMS, MOEMS, nano- and bionanotechnologies Optical diagnostics and imaging Integrated optics Design constraints for materials, manufacturing, and application space Bridging the technology gaps between interrelated fields, this reference is a powerful tool for students, engineers and scientists in the electrical, chemical, mechanical, biological, aerospace, materials, and optics fields. Its value also extends to applied physicists and professionals interested in the relationships between emerging technologies and cross-disciplinary opportunities. Author Mark A. Mentzer is a pioneer in the field of optical engineering. He is a senior research scientist at the U.S. Army Research Laboratory in Maryland. Much of his current work involves extending the fields of optical engineering and solid state physics into the realm of biochemistry and molecular biology, as well as structured research in biophotonics.




The MOCVD Challenge


Book Description

The MOCVD Challenge: Volume 2, A Survey of GaInAsP-GaAs for Photonic and Electronic Device Applications focuses on GaAs systems and devices grown by MOCVD, specifically MOCVD growth of GaAs and related alloys and GaInP for photonic and electronic applications. Along with Volume 1, this book provides a personal account of the author's own pioneering