Open AccessRadiation tests on erbium-doped garnet crystals for spaceborne CH4-Lidar applications
Author(s) -
Ansgar Meissner,
Martin Kreitler,
Miroslaw Cubera,
Philipp Kucirek,
Bastian Gronloh,
Dominik Esser,
M. Höfer,
Hans-Dieter Hoffmann
Publication year - 2015
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.2076122
Subject(s) - erbium , materials science , radiation , laser , lidar , optics , doping , radiation hardening , optoelectronics , neodymium , physics
A test campaign for assessing the radiation hardness of different Erbium-doped garnet crystals including Er:YAG and a compositionally tuned Er:YAG/Er:LuAG mixed garnet is reported. Tests with proton and gamma radiation have been performed with parameters mimicking a 3-year low-earth-orbit satellite mission like MERLIN or ADM-Aeolus. For each test sample broadband transmission spectra in the wavelength range of 500 nm -1700 nm and characteristic laser curves from a test laser oscillator have been measured. Radiation-induced losses have been calculated from the obtained data. The results indicate that gamma radiation is the dominant loss source with about 0.5 %/cm radiation-induced losses for the nominal dose of the chosen mission scenario
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