Structural and performance evaluation of gallium nitride micro-LED arrays via multiphoton fluorescence imaging

G. McConnell, E. Gu, C. Griffin, C.W. Jeon, H.W. Choi, J.M. Girkin, M.D. Dawson

Research output: Contribution to conferencePaper


We present a simple and powerful two-photon fluorescence imaging technique for noninvasive spatial evaluation of the gallium nitride (GaN) based structure deep within a micro- LED array. The GaN based heterostructure was excited via two-photon absorption and the resulting fluorescence was used to generate optical sections and three-dimensional representations of the active medium within the sample. Furthermore, by supplying current to the sample while imaging, this method was found to permit simple quantitative measurements of the operational and emission characteristics of the device.
Original languageEnglish
Publication statusUnpublished - 16 Apr 2003
EventFocus on Microscopy - Genova, Italy
Duration: 13 Apr 200316 Apr 2003


ConferenceFocus on Microscopy
CityGenova, Italy


  • two-photon excitation
  • optical sectioning
  • gallium nitride
  • microstructure

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