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Faculty & Staff Dietrich W. Langer

Professor Emeritus, Department of Electrical and Computer Engineering

Education

Ph.D. (Electrical Engineering ), Dr.-Ing., Technische Universitat, Berlin, 1961

Professional Interests

Dr. Langer's research interests related to II-VI and III-V compound semiconductors and to devices for electronic and optoelectronic applications, such as photo-detectors, injection lasers, solar cells and ultra-fast transistors. His present work encompasses the growth of multi-quantum-well structures of AlGaAs/Ga/As, the exploitation of the electric field dependence of the index of refraction of these structures for the design of novel devices, such as planar optical waveguides and modulators waveguide switches.

Selected Publications

Multiple-Quantum-Well Vertical Light Guide Switch, M. Chmielowski and D.W. Langer, J. Appl. Phys., 65, 927 (1989)

Wide-Angle Low-Loss Waveguide Branching for Integrated Optics, Dong-Sun Min, Dietrich W. Langer, Dhruv K. Pant and Rob D. Coalson, Fiber and Integrated Optics, 16, 331-342 (1997)

Multiple Twisted Data Line Techniques for Multi-Gigabit DRAMS, Dong-Sun Min and Dietrich W. Langer, IEEE Journal of Solid-State Circuits, 34, 856-865 (1999)

Curriculum Vitae

Professor Langer joined the department in 1987. He obtained his Ph.D. in Applied Physics in 1961 from the Technische Universitat in Berlin, Germany. Most of his career was spent as research scientist and in supervisory positions at Air Force Laboratories at Wright Patterson AFB, Ohio. As visiting scientist, he was affiliated with Harvard University, Ecole Normale Superieure in Paris, the Max-Planck Institute for Solid State Physics in Stuttgart and the Industrial College of the Armed Forces in Washington, DC. His research dealt with II-VI and III-V compound semiconductor materials and with devices for electronic and opto-electronic applications such as photo-detectors, injection lasers, solar cells, and ultra-fast transistors.

Dr. Langer coordinated the Opto-electronics efforts of the University of Pittsburgh's Materials Research enter which comprised contractual efforts in the Electrical Engineering, Chemistry and Physics Departments.

Professor Langer is a Fellow of the American Physical Society and Senior Member of the IEEE. His research is documented in over 100 refereed publications, 1 book and four patents. The subject of his most recent patent grew out of a Ph.D. thesis dealing with high speed data transmission in waveguides and dense circuits.

Benedum Hall

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