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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2002),
  • paper CThD1

Quantitative Determination of Photorefraction in Mg Doped Congruent and Stoichiometric LiNbO3

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Abstract

New interest on LiNbO3 (LN) is on raise since the demonstration of quasi-phasematched (QFM) optical frequency conversion processes in periodically poled LN. The newly developed stoichiometric LN (sLN) has two orders of magnitude smaller coercitive field strength1 than the congruent LN (cLN) making the poling process easier and more accurate. Unfortunately, both sLN and cLN shows strong photorefraction (PR) what is very disturbing in frequency conversion devices. It was demonstrated that Mg doping could significantly reduce PR. To optimize the stoichiometry and the Mg doping it is essential to measure the PR damage in a real quantitative way at light intensity typical in frequency conversion applications.

© 2002 Optical Society of America

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