Accession Number : ADP007655

Title :   Theoretical Model of the Photon Transport Transistor,

Corporate Author : COLORADO UNIV AT BOULDER

Personal Author(s) : Chu, A. K. ; Gigase, Y. ; Van Zeghbroeck, B.

Report Date : 22 MAY 1992

Pagination or Media Count : 5

Abstract : A theoretical model for the photon transport transistor (P.T.T.) is developed, based on a set of rate equations. With this model the small signal differential current gain Beta (Beta = dI sub c/dI sub b) is calculated and compared with measurement results. Our model confirms that the differential current gain is dominated at low carrier densities by the spontaneous emission. It then decreases once stimulated emission becomes dominant and finally collapses to a small value at the lasing threshold carrier density. We were able to quantify the non-radiative carrier recombination lifetime, which for our experimental results was found to be 300 ns, and the scattering loss in the waveguide, which amounts to 2.7/cm for an assumed total waveguide loss of 5/cm.

Descriptors :   *OPTICAL COMMUNICATIONS, *ELECTROOPTICS, *TRANSISTORS, EMISSION, EQUATIONS, GAIN, MEASUREMENT, MODELS, PHOTONS, RATES, SCATTERING, SIGNALS, TRANSPORT, VALUE, WAVEGUIDES, SIGNAL PROCESSING, OPTICAL CIRCUITS, GALLIUM ARSENIDES, ALUMINUM, PHOTODIODES, OPTICAL CIRCUITS, SYMPOSIA.

Subject Categories : Electrooptical and Optoelectronic Devices
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE