Electro-Optic Properties of Some Abo3 Perovskites in the Paraelectric Phase

Dielectric electrooptic gratings in potassium lithium tantalate niobate

“…is the effective quadratic electrooptic coefficient, and P is the induced (low frequency) polarization. (It should be noted that Dn is in fact the electrically induced birefringence so that the change in the refractive index depends on the light polarization [6].) Thus, the application of a uniform electric field to a crystal containing a T c grating will result in an ECBG of the form…”

Dielectric and Piezoelectric Properties of K(Ta0.51Nb0.49)O3Single Crystal

“…The enhancement of properties of lead free ferroelectrics is a subject of a strong current interest [1]. One of the most intriguing approaches to obtain such enhancement involves the so called 'domain engineering' where a high density of domain wall structure is created under different mechanical and electrical conditions [2][3].…”

Temperature dependence of Kerr coefficient and quadratic polarized optical coefficient of a paraelectric Mn:Fe:KTN crystal

“…Similarly, one notices from Fig.7 that the phase amplitude decreases as temperature rises, and decreases rapidly with voltage increasing, and the maximum ∆n is located at 28 • C, which indicates that the Mn:Fe:KTN crystal exhibits a strong EO effect near the Curie temperature, just as reported in other works. [21][22][23][24][25] Besides KTN single crystals, other ABO 3 solid-solution compounds like KNTN crystals and PMN-PT ceramics, have also been reported as exhibiting a strong quadratic EO effect near the Curie temperature and at temperatures beyond T C , the EO coefficients decrease rapidly, which has been connected with the polar nanoregions (PNRs) found in crystals near T C . 22 Comparing phase distribution for TE mode and TM mode in Mn:Fe:KTN crystal at the same temperature, we can find that, the phase amplitude value increases with increasing voltage for both TE mode and TM mode and the value increases fast for TM light while slowly for TE light.…”