Skip to main content
eScholarship
Open Access Publications from the University of California

UC Santa Barbara

UC Santa Barbara Previously Published Works bannerUC Santa Barbara

Electron relaxation and transport dynamics in low-temperature-grown GaAs under 1 eV optical excitation

  • Author(s): Sun, C K
  • Chen, Y H
  • Shi, J W
  • Chiu, Y J
  • Gan, K G
  • Bowers, J E
  • et al.
Abstract

Electron relaxation and transport dynamics in low-temperature-grown GaAs under 1 eV optical excitation was investigated by femtosecond transient transmission measurement and electro-optical sampling measurement in bulk samples and fabricated devices. An increase in the electron lifetime can be observed when the electron density is higher than 3x10(17) cm(-3). This effect is attributed to prolonged electron relaxation due to intervalley scattering of highly excited electrons and associated hot phonon effects. Our conclusion is further supported by bias-dependent studies where intervalley scattering was achieved using high electric fields. (C) 2003 American Institute of Physics.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View