PYROELECTRIC AFFECTION ON THE READOUT OF PHOTO-REFRACTIVE HOLOGRAPHIC GRATING | Zendy

SHE WEI-LONG | Zendy; YU ZHEN-XIN | Zendy; Lei Deming | Zendy

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PYROELECTRIC AFFECTION ON THE READOUT OF PHOTO-REFRACTIVE HOLOGRAPHIC GRATING

Author(s) -

SHE WEI-LONG,

YU ZHEN-XIN,

Lei Deming

Publication year - 1996

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.45.1655

Subject(s) - photorefractive effect , pyroelectricity , grating , optics , holography , materials science , holographic grating , laser , beam (structure) , fiber bragg grating , optoelectronics , laser beams , physics , diffraction grating , ferroelectricity , dielectric

The photorefractive holographic grating in a Mn doped K1-yNayBa2-xSrxNb5O15 (KNSBN) is written with two 0.27mW He-Ne laser beams (632.6nm) and is read with one quasicontinuous dye laser beam (621.8nm, 1.6mW or less). It is found that the Bragg diffracton suddenly reaches its maximum at the beginning and then decays to its minimum with a time constant of about 0.6s. The ratio of the maximum to the minimum can be higher than 7.5. A theory including pyroelectric effect has been developed and it fits the experiment well.

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