Three-dimensional nonlinear photonic crystal in ferroelectric barium calcium titanate

Xu, Tianxiang; Switkowski, Krzysztof; Chen, Xin; Liu, Shan; Koynov, Kaloian; Yu, Haohai; Zhang, Huaijin; Wang, Jing; Sheng, Yan; Królikowski, Wiesław

doi:10.1038/s41566-018-0225-1

Cited by 147 publications

(85 citation statements)

References 31 publications

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“…Recently, a promising all-optical domain inversion process was demonstrated with focused fs-laser pulses in LiNbO 3 . [21][22][23] LiNbO 3 is transparent in this wavelength range, i.e., linear absorption can be neglected. The focused infrared (IR) pulses cause local heating by multiple photon absorption, leading to a local reduction of the coercive field and to an internal field that exceeds the threshold field of domain nucleation.…”

mentioning

confidence: 99%

Local domain inversion in MgO-doped lithium niobate by pyroelectric field-assisted femtosecond laser lithography

Imbrock

Hanafi

Ayoub

et al. 2018

Applied Physics Letters

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We explore a physical approach to invert ferroelectric domains in the volume of MgO-doped lithium niobate crystals without any external electric field. Permanent defect structures are created by focused infrared femtosecond laser pulses below the material surface along the polar axis followed by a thermal treatment. This procedure leads to an inversion of ferroelectric domains beneath and above the laser-induced filaments up to the surfaces of the crystal. All domain walls are straight and up to 800 μm long. We measure the domain width in dependence on the length of the filaments and the writing energy. The smallest achieved domain width and the domain spacing is 1 μm. We propose a model taking into account the temperature dependence of the pyroelectric field and thermally activated bulk charges to explain the mechanism of domain inversion. Our findings pave the way to all-optical printing of arbitrary ferroelectric domain structures for nonlinear photonic applications.

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mentioning

confidence: 99%

Local domain inversion in MgO-doped lithium niobate by pyroelectric field-assisted femtosecond laser lithography

Imbrock

Hanafi

Ayoub

et al. 2018

Applied Physics Letters

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“…To this end we employed laser induced ferroelectric domain inversion process. [ 36–40 ] By illuminating the Z cut sample with tightly focused femtosecond beam, and scanning it in 3D, we created 3D pattern of inverted domains, which replicated the designed 3D pattern shown in Figure 3b (see Experimental Section for details). The fabricated volume holographic structure visualized via the Čerenkov second harmonic microscopy, [ 44 ] is shown in Figure 3c.…”

Section: Resultsmentioning

confidence: 92%

“…[36][37][38] Subsequently, the technique enabled experimental demonstration of fully 3D nonlinear crystal as well as nonlinear wave-front shaping in nonphase matched harmonic generations. [39,40] In this work, we employ the laser-induced ferroelectric domain reversal to form 3D nonlinear photonic crystal and demonstrate its use in nonlinear volume holography. While the concept of nonlinear holograms has been proposed several years ago, and demonstrated in the context of 2D structures, the experimental demonstration of fully 3D volume nonlinear holograms has never been reported.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Volume Holography in 3D Nonlinear Photonic Crystals

Liu

Mazur

Królikowski

et al. 2020

Laser & Photonics Reviews

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Nonlinear photonic crystals (NPCs) are transparent materials with a space-dependent (often periodic) second-order nonlinearity, which have been used extensively for the generation and control of coherent light at new frequencies. Thanks to recently introduced fabrication techniques capable of 3D nonlinearity engineering, explorations of nonlinear wave interaction with improved or unique functionalities of 3D configurations become possible. Here, the experimental example of nonlinear volume holography based on 3D NPCs is presented. The 3D modulation of nonlinearity enables reconstruction of optical beams at new frequency with predesigned phase and amplitude structures. Furthermore, a simultaneous synchronization of phase velocities of the fundamental reading beam and the generated new frequency beam ensures increased conversion efficiency. A proof-of-concept nonlinear holographic reconstruction of second harmonic vortex beam is obtained with an optically induced 3D nonlinear volume hologram in ferroelectric calcium barium niobate crystal. The results show the nonlinear volume holography based on 3D NPC provides a novel promising approach for efficient realization of optical complex beams at new frequencies, paving the way for applications in all-optical signal processing, super-resolution imaging, and 3D laser displays.

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“…These constraints can be overcome in engineered ferroelectric crystals with a full three-dimensional (3D) periodic spontaneous polarization distribution through quasi-phase-matching [8][9][10][11][12] and Cherenkov phase-matching [13][14][15][16][17][18][19][20] . 3D lattices of spontantabfigeous polarization also occur naturally in nanodisordered ferroelectrics in the form of supercrystals 21 , in which case the highly ordered domain mosaic also leads to giant broadband optical refraction 22 .…”

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confidence: 99%

Constraint-free wavelength conversion supported by giant optical refraction in a 3D perovskite supercrystal

et al. 2020

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Nonlinear response in a material increases with its index of refraction as n4. Commonly, n ~ 1 so that diffraction, dispersion, and chromatic walk-off limit nonlinear scattering. Ferroelectric crystals with a periodic 3D polarization structure overcome some of these constraints through versatile Cherenkov and quasi-phase-matching mechanisms. Three-dimensional self-structuring can also lead to a giant optical refraction. Here, we perform second-harmonic-generation experiments in KTN:Li in conditions of giant broadband refraction. Enhanced response causes wavelength conversion to occur in the form of bulk Cherenkov radiation without diffraction and chromatic walk-off, even in the presence of strong wave-vector mismatch and highly focused beams. The process occurs with a wide spectral acceptance of more than 100 nm in the near infrared spectrum, an ultra-wide angular acceptance of up to ±40∘, with no polarization selectivity, and can be tuned to allow bulk supercontinuum generation. Results pave the way to highly efficient and adaptable nonlinear optical devices with the promise of single-photon-to-single-photon nonlinear optics.

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Three-dimensional nonlinear photonic crystal in ferroelectric barium calcium titanate

Cited by 147 publications

References 31 publications

Local domain inversion in MgO-doped lithium niobate by pyroelectric field-assisted femtosecond laser lithography

Local domain inversion in MgO-doped lithium niobate by pyroelectric field-assisted femtosecond laser lithography

Nonlinear Volume Holography in 3D Nonlinear Photonic Crystals

Constraint-free wavelength conversion supported by giant optical refraction in a 3D perovskite supercrystal

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