Femto-second electron transit time characterization in GaN/AlGaN quantum cascade detector at 1.5 micron

A. Vardi, S. Sakr, J. Mangeney, P. K. Kandaswamy, E. Monroy, M. Tchernycheva, S. E. Schacham, F. H. Julien, G. Bahir

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Abstract

The ultra fast carrier dynamic in GaN/AlGaN quantum cascade detector was investigated using a time-resolved bias-lead monitoring technique. It is demonstrated that the intrinsic speed limitation, governed by the carrier transit time, is smaller than 1 ps, corresponding to a frequency cut off above 200 GHz.

Original languageEnglish
Article number202111
JournalApplied Physics Letters
Volume99
Issue number20
DOIs
StatePublished - 14 Nov 2011

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