Nitride image intensifiers

J. W. Glesener; A. M. Dabiran; J. P. Estrera

doi:10.1117/12.828755

28 April 2009 Nitride image intensifiers

J. W. Glesener, A. M. Dabiran, J. P. Estrera

Proceedings Volume 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V; 73390S (2009) https://doi.org/10.1117/12.828755
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Nitride based photocathodes for image intensifiers are of interest because of the wide span of wavelengths covered by the bandgap of the AlGaInN alloy system. The potential bandgap range for this alloy system is from 6.2 eV for AlN to 0.7 eV for InN. Coupled with microchannel plate technology, this alloy system potentially offers low noise and high gain image intensifiers over a wide wavelength range. Results from L-3 EOS work in this area are presented beginning with a brief summary of unpublished early work carried out from 1992 - 1997 on AlGaN image intensifiers. The early work wrestled with the dual issues of sealing image intensifiers along with improving the quality of the AlGaN epitaxy layer. This is followed by our current results on a GaN image intensifier sealed with a photocathode from SVTA. Imagery using 375nm LED illumination is shown. The quantum efficiency at 300nm was estimated to be 16% measured in transmission mode. This QE was achieved with a 0.15μm thick Mg doped GaN active layer.

Citation Download Citation

J. W. Glesener, A. M. Dabiran, and J. P. Estrera "Nitride image intensifiers", Proc. SPIE 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V, 73390S (28 April 2009); https://doi.org/10.1117/12.828755

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available