Journal
OPTICS EXPRESS
Volume 20, Issue 27, Pages 29131-29136Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.029131
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Funding
- National Key Basic Research Program of China [2013CB328706]
- Chinese National Key Basic Research Special Fund [2011CB922003]
- International S&T Cooperation Program of China [2011DFA52870]
- Taishan Scholar Construction Project Special Fund
- Fundamental Research Funds for the Central Universities [65030091, 65010961]
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We developed a real-time imaging system to probe the light-assisted domain reversal process of Mg-doped LiNbO3. An interesting phenomenon was observed where the domain appeared to reverse just after the laser was obscured. An exclusive electric field of about 350 V/mm was measured at 532 nm of light irradiation at an intensity of 6.6 x 104 W/cm(2). The exclusive electric field was considered to be produced by a pyroelectric effect owing to a temperature change in the region of irradiation. The temperature change in the light-irradiated region was calculated to be about 2.3 degrees C. Our experimental results indicate that a change of the electric field caused by the pyroelectric effect may play a significant role when LiNbO3 or other ferroelectric crystals are used under strong light. (C) 2012 Optical Society of America
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