Journal
JOURNAL OF APPLIED PHYSICS
Volume 109, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3544069
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Funding
- FIRB PHOCOS [RBFR08E7VA]
- Fondazione CARIPLO [2007.5193]
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We report an all-optical method to measure the pyroelectric coefficient p of electro-optic crystals. Through this technique, we first acquire the birefringence variation delta Delta n of the crystal as a function of its temperature T, both in closed and open-circuit conditions, using a Senarmont phase-compensation configuration. Then the pyroelectric field is deduced from the difference between these two measurements, so it leads to the material spontaneous polarization change, whose derivative with respect to the temperature finally gives p. This technique is applied on congruent and stoichiometric lithium niobate. (C) 2011 American Institute of Physics. [doi:10.1063/1.3544069]
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