Abstract
In terbium molybdate Tb2(MoO4)3 at room temperature, a laser beam of wavelength λ1=4880 A induces an electric polarization that lasts for several days after the irradiation is turned off. The photoinduced polarization has the same sign as the spontaneous polarization. At a laser power of 0.5 W and an exposure time of 4.5 h, the photoinduced polarization exceeds the spontaneous polarization by an order of magnitude. The corresponding electric field is 2.5×106 V/cm. Under the influence of radiation with λ1=4880 A, terbium molybdate luminesces in the green part of the spectrum near λ2≈5425 A. The luminescence quantum yield is 20%.
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