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Effects of 1-MeV neutron irradiation on the operation of a bistable optically controlled semiconductors with (BOSS)

Journal Article · · IEEE Transactions on Electron Devices (Institute of Electrical and Electronics Engineers); (United States)
DOI:https://doi.org/10.1109/16.293301· OSTI ID:7037368
; ;  [1];  [2]; ;  [3]
  1. Naval Surface Warfare Center, Dahlgren, VA (United States). Pulsed Power Systems and Technology Group
  2. Siemens AG, Muenich (Germany)
  3. Sandia National Labs., Albuquerque, NM (United States)

Recent subnanosecond-opening results of the bistable optically controlled semiconductor switch (BOSS) are presented. The processes of persistent photoconductivity followed by photo-quenching have been demonstrated in copper-compensated, silicon-doped, semi-insulating gallium arsenide (GaAs:Si:Cu). These processes allow a switch to be developed that can be closed by the application of one laser pulse ([lambda] = 1.06 [mu]m) and opened by the application of a second laser pulse with a wavelength equal to twice that of the first laser. The opening phase is a two-step process which relies initially on the absorption of the 2--13-[mu]m laser and finally on the recombination of electrons in the conduction band with holes in the valance band. The second step requires a sufficient concentration of recombination centers in the material for opening to occur in the subnanosecond regime. This report discusses the effects of 1-MeV neutron irradiation on the BOSS material for the purpose of recombination center generation. Initial experiments indicated a reduction of the recombination time from several nanoseconds down to about 250 ps. Both experimental and theoretical results are presented.

OSTI ID:
7037368
Journal Information:
IEEE Transactions on Electron Devices (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Electron Devices (Institute of Electrical and Electronics Engineers); (United States) Vol. 41:6; ISSN 0018-9383; ISSN IETDAI
Country of Publication:
United States
Language:
English