Edge instability elimination of GaAs/ALGaAs MQW avalanche transit time oscillators by P(+) substrate

Abstract

The p(+) substrate plays an important role on the edge stability of p(+)n multiquantum well avalanche transit time devices. The p(+)n multiquantum well avalanche transit time devices on n(+) substrate easily burn out along the device edge at low breakdown current. The same structure on p(+) substrate can have the desired band diagram on device edge to eliminate edge burn-out and CW operation is thus achieved at 100.3 GHz. (C) 2004 Wiley Periodicals, Inc.