Figure 1 | Scientific Reports

Figure 1

From: Three order increase in scanning speed of space charge-controlled KTN deflector by eliminating electric field induced phase transition in nanodisordered KTN

Figure 1

Illustration of a KTN crystal operating under different phases.

(a) Illustration of the polarization of the KTN under different conditions: at the temperature well above the Curie temperature and with no electric field; at the temperature near the Curie temperature and with no electric field; at the temperature near the Curie temperature and with a high electric field. (b) An illustration of a KTN crystal in the ferroelectric phase. (c) An illustration of a voltage-controlled variable prism working in the paraelectric phase (upper) and the ferroelectric phase (lower). Beam I represents the light beam passing through the prism without applying an electric field, and Beam II represents the light beam with an applied electric field. In the paraelectric phase, both the thickness and slope of the prism are altered by the applied electric field so that Beam II has a different propagation direction from Beam I. However, in the ferroelectric phase, only the thickness of the prism is altered by the applied electric field, Beam II has a same propagation direction as Beam I, and thus there is no change in the beam deflection angle.

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