Two-step two-color recording in a photorefractive praseodymium-doped La₃Ga₅SiO₁₄ crystal

Publication date
1999
Document type
Research article
Author
Nikolajsen, T.
Johansen, P. M.
Yue, X.
Krätzig, E.
Organisational unit
Universität Osnabrück
DOI
URI
Scopus ID
ISSN
Series or journal
Applied Physics Letters
Periodical volume
74
Periodical issue
26
First page
4037
Last page
4039
Part of the university bibliography
Nein
Abstract
Two-step two-color recording is demonstrated in a photorefractive La3Ga5SiO14:Pr3+ crystal using cw laser radiation. The 488 nm line from an Ar-ion laser is used for gating and gratings are written using a Ti:sapphire laser operating in the range from 788 to 840 nm. The dependence of holographic recording on grating and writing intensity is investigated. A saturation of the sensitivity is found for 2 W/cm2 of grating intensity. A threshold photon energy of 1.53 eV for the second excitation step is observed. © 1999 American Institute of Physics.
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