Title :
Comparison of gamma and proton-induced radiation damage in long-wavelength VCSELs
Author :
Van Uffelen, M. ; Mols, J. ; Goussarov, A. ; Neumeyr, C. ; Ortsiefer, M. ; Berghmans, F.
Author_Institution :
Belgian Nucl. Res. Centre, SCK-CEN, Mol, Belgium
Abstract :
We studied long-wavelength vertical-cavity surface-emitting laser diodes (LW-VCSELs) emitting in the 1.4-1.7 mum range under gamma radiation up to 9 MGy and 36 MeV protons up to 1013p/cm2, in order to compare the impact of both ionizing and displacement damage on their optical and electrical properties. The limited threshold shift and slope efficiency degradation of these state-of-the-art electrically-pumped laser diodes allow us to envisage data and sensor applications in various radiation environments.
Keywords :
gamma-ray effects; proton effects; surface emitting lasers; displacement damage; gamma radiation; radiation damage; vertical-cavity surface-emitting laser diodes; Diode lasers; Fiber lasers; Indium phosphide; Optical receivers; Protons; Quantum dot lasers; Quantum dots; Quantum well lasers; Semiconductor lasers; Vertical cavity surface emitting lasers; Vertical-Cavity Surface-Emitting Lasers (VCSELs); gamma radiation; protons; slope efficiency; threshold current;
Conference_Titel :
Radiation and Its Effects on Components and Systems, 2007. RADECS 2007. 9th European Conference on
Conference_Location :
Deauville
Print_ISBN :
978-1-4244-1704-9
DOI :
10.1109/RADECS.2007.5205463
