Nonlinear Beam Shaping in Domain Engineered Ferroelectric Crystals

Hu, Xiaopeng; Zhang, Yong; Zhu, Shining

doi:10.1002/adma.201903775

Cited by 37 publications

(24 citation statements)

References 124 publications

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“…[58] Ferroelectric domain patterns are critically important for nonlinear photonic crystals. [59] Optical manipulation promises a breakthrough toward ferroelectric domain engineering in a remote and non-contact manner. Furthermore, ferroelectric domain inversion via femtosecond laser leads to the fabrication of 3D nonlinear photonic crystals with unprecedented resolution and depth.…”

Section: Optical Manipulation Of Ferroelectric Domainmentioning

confidence: 99%

Recent Progress in Optical Control of Ferroelectric Polarization

Guo

Chen

et al. 2021

Advanced Optical Materials

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of nonvolatile ferroelectric random access memory. [11] Another example, given the optical anisotropy of ferroelectric crystals, the electro-optic performance of a ferroelectric-based modulator relays on the relationship between the domain orientation, the applied electric field, and the polarization of the optical signal. [12] Recent years, people have further found that the ferroelectric polarization can effectively tune the light emission from the doped metal ions, which offers an additional degree of freedom for designing luminescent materials and devices. [10,13] Control over ferroelectric polarization is of great importance from both scientific and technological viewpoints. To date, a static or pulsed electric field represents the most effective tuning knob. Electric field method, however, suffers from limitations associated with the requirement of circuitry access or the cumbersome and time-consuming process. [14] Furthermore, electrically controllable polarization modulation can be typically accomplished within nanoseconds. It is difficult to use electric fields for motivating and exploiting ultrafast phenomena on the picosecond time scale or less. [15] Strain engineering is now possible to render the polarization status and build artificial heterostructures engineered down to a unit cell. [16] Breakthroughs in synthesizing high-quality epitaxial ferroelectric thin films have provided more opportunities to explore strain effects on ferroelectric polarizations. [17] Practical implementations of strain control over ferroelectric polarization are limited to some particular systems. Ferroelectric oxides are generally brittle. However, their thin-film counterparts can tolerate lattice-mismatch-based biaxial strains within ±3%. [8,18] Also, mechanical strain cannot realize ultrafast modulation of ferroelectric polarization.Electromagnetic waves have offered an extremely versatile manner for controlling ferroelectric polarization. The interaction of light with ferroelectrics gives rise to several fascinating photosensitive and photoresponse phenomena such as anomalous photovoltaics, [19] photostriction, [20] and piezophototronics. [21] These fields were termed photoferroelectrics. [22] The recent renaissance of photoferroelectrics began with the interest on ferroelectric photovoltaics, especially after a giant photovoltaic effect observed in multiferroic BiFeO 3 (BFO) thin films. [23,24] The above bandgap open-circuit voltage represents the most unique feature of ferroelectric photovoltaics, [25] which is associated with remnant polarizations, domain walls, defects,

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Section: Optical Manipulation Of Ferroelectric Domainmentioning

confidence: 99%

Recent Progress in Optical Control of Ferroelectric Polarization

Guo

Chen

et al. 2021

Advanced Optical Materials

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“…The transverse phase mismatch is compensated in this process. [35][36][37] The DVG patterns are designed by GA, which provide specific multichannels of diffracted OAM states. At first, a 1D binarized grating is divided into 20 equal parts, and phase mutations randomly occur in each part.…”

Section: Principlementioning

confidence: 99%

Visible and Online Detection of Near‐Infrared Optical Vortices via Nonlinear Photonic Crystals

Liu

Chen

Zhang

et al. 2021

Advanced Optical Materials

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have been extensively investigated in the past three decades. [1,2] Theoretically, OVs carry well-defined orbital angular momentum (OAM), [1] which adds a new degree of freedom in beam steering and have been applied in both classical and quantum regions of light. [3][4][5][6] Compared with the visible beam, the near-infrared (NIR) beam has a series of unique advantages, such as avoiding photo-induced cytotoxicity [7] and conveniently generating by traditional lasers. [8,9] Especially in the field of optical communication, since the NIR band lies in the low loss and nearzero dispersion area of commercial silica fiber, NIR optical sources have been widely used. [10,11] Due to their extra informationcarrying capacity, the NIR OVs could profoundly improve the performance of optical communication systems. [5,12,13] The developments of NIR OVs in optical communication generally contain three aspects, transmission, generation, and detection. For transmission, several schemes such as free-space optical transmission, [5] spiral fiber, [12] and few-mode fiber [14] have been demonstrated. Meanwhile, NIR OVs could be generated by spiral phase plates, [1,15] q-plates, [16] fork grating, [17] metamaterials, [18,19] and so on. Towards detection, most of the methods suggested using various devices, such as linear Dammman gratings, [20] spatial light modulator, [21] and metasurfaces [22] to transform the OVs to Gaussian modes, and then perform detection. However, all these methods cannot be used for online detection due to the transform of the entire incident OVs and the requirement of other devices in the following reconstruction. [23] Additionally, despite silicon-based detectors, which have shown excellent quality and high resolution in visible regions, NIR detectors, which are based on InGaAs have been suffered from high readout noise, low-speed response, and stringent cooling requirements. [23] Although the above schemes could realize NIR OVs detection, all of them could not avoid using the InGaAs-based detectors, which goes against their applications in optical communications, to a certain extent.One practical solution is to convert and detect the NIR OVs in visible regions with enhanced imaging performance. Nonlinear up-conversion NIR imaging is conducted in visible regions with high contrast and resolution images captured by silicon charge coupled devices (CCDs). [24][25][26][27] Earlier research efforts also have proved that, the OAM will be conserved in the nonlinear processes involved with OVs, [28,29] which provides a theoretical basis Near-infrared (NIR) optical vortices (OVs), which carry specific orbital angular momentum, are believed to greatly increase the capacity of conventional optical communication systems. However, due to the equipment limits in invisible wavelengths, NIR OVs detection remains a great difficulty. Here, the up-conversion imaging technology is exploited to circumvent using NIR detectors. A lithium niobate crystal with its quadratic susceptibility modulated by a specially designed Dammann vorte...

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“…Owing to the energy degeneracy of multiple possible polarization orientations, ferroelectrics will spontaneously form a unique domain configuration, where domains with different polarization orientations are separated by domain walls. Since the properties of ferroelectrics depend on the domain configuration, research on domain engineering [ 1 ] (e.g., domain orientation and domain size) and domain‐wall engineering [ 2 ] (e.g., domain‐wall mobility, topological structure, and domain‐wall conduction) has attracted extensive interest.…”

Section: Introductionmentioning

confidence: 99%

Domain Engineering in Bulk Ferroelectric Ceramics via Mesoscopic Chemical Inhomogeneity

Thong

et al. 2022

Advanced Science

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Domain engineering in ferroelectrics endows flexibility for different functional applications. Whereas the domain engineering strategy for single crystals and thin films is diverse, there is only a limited number of strategies for bulk ceramics. Here, a domain engineering strategy for achieving a compact domain architecture with increased domain‐wall density in (K,Na)NbO3 (KNN)‐based ferroelectric ceramics via mesoscopic chemical inhomogeneity (MCI) is developed. The MCI‐induced interfaces can effectively hinder domain continuity and modify the domain configuration. Besides, the MCI effect also results in diffused phase transitions, which is beneficial for achieving enhanced thermal stability. Modulation of chemical inhomogeneity demonstrates great potential for engineering desirable domain configuration and properties in ferroelectric ceramics. Additionally, the MCI can be easily controlled by regulating the processing condition during solid‐state synthesis, which is advantageous to industrial production.

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Nonlinear Beam Shaping in Domain Engineered Ferroelectric Crystals

Cited by 37 publications

References 124 publications

Recent Progress in Optical Control of Ferroelectric Polarization

Recent Progress in Optical Control of Ferroelectric Polarization

Visible and Online Detection of Near‐Infrared Optical Vortices via Nonlinear Photonic Crystals

Domain Engineering in Bulk Ferroelectric Ceramics via Mesoscopic Chemical Inhomogeneity

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