Fabry-Perot quantum cascade lasers (QCLs) were characterized following irradiation by high energy (64 MeV) protons and Cobalt-60 gamma rays. Seven QCLs were exposed to radiation dosages that are typical for a space mission in which the total accumulated dosages from both radiation sources varied from 20 krad(Si) to 46.3 krad(Si). The QCLs did not show any measurable changes in threshold current or slope efficiency suggesting the suitability of QCLs for use in space-based missions.
Revised: March 10, 2015 |
Published: January 20, 2015
Citation
Myers T.L., B.D. Cannon, C.S. Brauer, S. Hansen, and B. Crowther. 2015.Proton and gamma irradiation of Fabry-Perot quantum cascade lasers for space qualification.Applied Optics 54, no. 3:527-534.PNNL-SA-105067.doi:10.1364/AO.54.000527