Picosecond Joule heating in photoconductive switch electrodes

Author

• Bjorn Vermeersch, Birck Nanotechnology Center, Purdue UniversityFollow
• Gilles Pernot, University of California - Santa Cruz
• Hong Lu, University of California - Santa Barbara
• Je-Hyeong Bahk, Birck Nanotechnology Center, Purdue UniversityFollow
• Art Gossard, University of California - Santa Barbara
• Ali Shakouri, University of California - Santa Cruz, Birck Nanotechnology Center, Purdue UniversityFollow

Abstract

We present experimental observations of picosecond Joule heating inside the gold metallization of ErAs:GaAs photoconductive switches. Femtosecond laser time-domain thermoreflectance is employed to resolve the fast thermal dynamics in the central switch electrode during generation and transmission of rf electrical pulses. Sharp features in the thermoreflectance signal scaling quadratically with the bias/pulse voltage reveal Joule heating with durations

Keywords

ASSEMBLED ERAS ISLANDS, MULTILAYER METALS, DOPED-GAAS, POWER, THERMOREFLECTANCE, TRANSIENT, TRANSPORT, DYNAMICS

DOI

10.1103/PhysRevB.88.214302

Date of this Version

12-11-2013

Recommended Citation

Vermeersch, Bjorn; Pernot, Gilles; Lu, Hong; Bahk, Je-Hyeong; Gossard, Art; and Shakouri, Ali, "Picosecond Joule heating in photoconductive switch electrodes" (2013). Birck and NCN Publications. Paper 1541.
http://dx.doi.org/10.1103/PhysRevB.88.214302