Accession Number : ADA634885


Title :   Avalanche Photoconductive Switching


Descriptive Note : Conference paper


Corporate Author : LAWRENCE LIVERMORE NATIONAL LAB CA


Personal Author(s) : Pocha, M D ; Druce, R L ; Wilson, M J ; Hofer, W W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a634885.pdf


Report Date : Jun 1989


Pagination or Media Count : 4


Abstract : This paper describes work being done at Lawrence Livermore National Laboratory on the avalanche mode of operation of laser triggered photoconductive switches. We have been able to generate pulses with amplitudes of 2 kV - 35 kV and rise times of 300- 500 ps, and with a switching gain (energy of output electrical pulse vs energy of trigger optical pulse) of 1000 to over 100000. Switches with two very different physical configurations and with two different illumination wavelengths (1.06 micrometer, 890 nm) exhibit very similar behavior. The avalanche switching behavior, therefore, appears to be related to the material parameters rather than the optical wavelength or switch geometry. Considerable further work needs to be done to fully characterize and understand this mode of operation.


Descriptors :   *PHOTOCONDUCTIVITY , *SEMICONDUCTORS , *SWITCHES , AMPLITUDE , AVALANCHE EFFECT(ELECTRONICS) , ELECTRIC CURRENT , LASERS , LIGHT PULSES , OPTICAL SWITCHING


Subject Categories : Electrical and Electronic Equipment
      Electrooptical and Optoelectronic Devices


Distribution Statement : APPROVED FOR PUBLIC RELEASE