Optical Properties of PT‐Based Relaxor Ferroelectric Crystals

Abstract

During the last two decades, PT-based relaxor ferroelectric crystals such as (1−x)Pb(Zn 1/3 Nb 2/3 )O 3 -xPbTiO 3 (PZN-PT), (1−x)Pb(Mg 1/3 Nb 2/3 )O 3 -xPbTiO 3 (PMN-PT), and (1−x−y)Pb(In 1/2 Nb 1/2 )O 3 -yPb(Mg 1/3 Nb 2/3 )O 3 -xPbTiO 3 (PIN-PMN-PT or PIMNT) crystals, are widely studied due to their huge piezoelectric properties and super-high electro-mechanical coupling factors. They have excellent properties with compositions around the morphotropic phase boundary (MPB). It is gratifying that the PT-based relaxor crystals are replacing traditional PZT piezo-ceramics in many application fields. Most ferroelectrics with oxygen-octahedral structure, which show outstanding electro-mechanical properties, also have excellent optical performances. Ferroelectric single crystals with large electro-optic (EO) modulation are widely applied in laser communication devices. For the practical applications, the knowledge of detailed optical parameters is desirable. This paper tries to show a global review on the optical properties of PT-based relaxor ferroelectric crystals. In the present review, optical properties of the crystals are systematically summarized, including refractive index dispersion, transmittance, band gap, EO, acousto-optic, and photorefractive properties. These properties change with the crystal composition, orientation, and poling condition. The purpose of the review is to provide a resource for the researchers who are concerned with basic physical investigation or optical device applications of the PT-based relaxor ferroelectric crystals.

Dy/Sr‐codoped (K0.5Na0.5)NbO3 multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

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Multiple Bound State Soliton Pulses in the All Polarization Maintaining Fiber Laser

“…Moreover, the bound state pulses obtained in this way often acquired only one state or were accompanied by a tunable center wavelength [ 21 ]. In recent years, extensive research has been conducted on photonic crystals [ 22 , 23 , 24 ], and the tunability of lasers has been successfully achieved by using SWCNT [ 25 ]. Inspired by these significant advancements, our study aimed to explore the potential of combining zeolite photonic crystals with carbon nanotubes.…”

Influence of Lattice Mismatch on Structural and Functional Properties of Epitaxial Ba0.7Sr0.3TiO3 Thin Films

“…Whereas ferroelectric oxide thin films are already used in many modern devices, research has been focusing over the last few years on exploiting their properties for novel applications [1]. For example, their opto-electronic properties are tested in high-frequency modulators [2][3][4], while the excellent dielectric and switching characteristics are promising for energy storage purposes [5,6]. Additionally, the pyroelectric properties might be beneficial for energy-harvesting devices as well as for the use in eco-friendly and efficient solid-state cooling [7,8].…”