Submicron periodical poling by local switching in ion sliced lithium niobate thin films with a dielectric layer

Slautin, Boris; Zhu, Houbin; Shur, V. Ya.

doi:10.1016/j.ceramint.2021.08.188

Cited by 9 publications

(4 citation statements)

References 45 publications

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“…[3,4] The current state-of-the-art technology of periodical poling allows creating periodically poled domain structures with micrometer-scale periods in bulk CLN crystals. [5][6][7][8][9][10] The active development of domain engineering in recent years has significantly expanded the range of CLN applications. [5,11] The widespread use of CLN crystals in integrated optics and telecommunications [12] is based on a mature technology of creating waveguides.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of the Domain Structure in Uniform Electric Field in LiNbO₃ with Surface Layer Modified by Soft Proton Exchange

Savelyev,

Akhmatkhanov,

Tronche

et al. 2023

Physica Rapid Research Ltrs

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The creation of periodic domain structures in lithium niobate crystals makes it possible to realize highly efficient nonlinear optical interactions in optical waveguides. The influence of near‐surface H+ ion concentration gradient on the domain kinetics in uniform electric field in lithium niobate crystals modified by soft proton exchange is studied. The spatial distribution of the H+ ions concentration in the surface layer is obtained by confocal Raman microscopy. The observed anomalous evolution of the domain structure at the surface represents the formation of stripe domains and their anisotropic growth along three directions. The domain imaging in the bulk allows revealing a comb‐like domain shape. The obtained strong influence of the proton exchange duration on the threshold field is attributed to the action of the concentration gradient in the near‐surface layer, which is considered as an analog of the internal bias electric field. It is shown that the internal bias field is proportional to the increase in the concentration gradient in the surface layer. The mechanism of the comb‐like domain formation is proposed. The obtained results can be used for development of domain engineering methods in optical waveguides.

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Section: Introductionmentioning

confidence: 99%

“…[ 3,4 ] The current state‐of‐the‐art technology of periodical poling allows creating periodically poled domain structures with micrometer‐scale periods in bulk CLN crystals. [ 5–10 ] The active development of domain engineering in recent years has significantly expanded the range of CLN applications. [ 5,11 ]…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the Domain Structure in Uniform Electric Field in LiNbO₃ with Surface Layer Modified by Soft Proton Exchange

Savelyev,

Akhmatkhanov,

Tronche

et al. 2023

Physica Rapid Research Ltrs

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“…In addition, the creation of periodic domain patterns with submicron periods in LNOI produced by irradiation etching can be used for second-harmonic generation, backscattering optical parametric oscillators, etc. [15,16]. In view of the structural advantage, micro/nanostructured studies of LNOI wafers under various conditions are still indispensable, and new methods to modify the micro/nanostructure to improve properties are being continually investigated.…”

Section: Introductionmentioning

confidence: 99%

Thermal Spike Responses and Structure Evolutions in Lithium Niobate on Insulator (LNOI) under Swift Ion Irradiation

et al. 2022

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Irradiating solid materials with energetic ions are extensively used to explore the evolution of structural damage and specific properties in structural and functional materials under natural and artificial radiation environments. Lithium niobate on insulator (LNOI) technology is revolutionizing the lithium niobate industry and has been widely applied in various fields of photonics, electronics, optoelectronics, etc. Based on 30 MeV 35Cl and 40Ar ion irradiation, thermal spike responses and microstructure evolution of LNOI under the action of extreme electronic energy loss are discussed in detail. Combining experimental transmission electron microscopy characterizations with numerical calculations of the inelastic thermal spike model, discontinuous and continuous tracks with a lattice disorder structure in the crystalline LiNbO3 layer and recrystallization in the amorphous SiO2 layer are confirmed, and the ionization process via energetic ion irradiation is demonstrated to inherently connect energy exchange and temperature evolution processes in the electron and lattice subsystems of LNOI. According to Rutherford backscattering/channeling spectrometry and the direct impact model, the calculated track damage cross–section is further verified, coinciding with the experimental observations, and the LiNbO3 layer with a thickness of several hundred nanometers presents track damage behavior similar to that of bulk LiNbO3. Systematic research into the damage responses of LNOI is conducive to better understanding and predicting radiation effects in multilayer thin film materials under extreme radiation environments, as well as to designing novel multifunctional devices.

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“…The production of PPLNOI with submicron periods remains a challenging task, due to domain-domain interactions and backswitching in LN crystals. The creation of periodical domain structures down to 200 nm in Z-cut LNOI using the biased tip of a scanning probe microscope (SPM) [30,31] has been reported recently.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Nanodomains and Formation of Self-Organized Structures during Local Switching in X-Cut LNOI

et al. 2022

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The features of nanodomain growth during local switching in X-cut lithium niobate on insulator (LNOI) were comprehensively studied using the biased tip of a scanning probe microscope. The obtained results were discussed in terms of the kinetic approach. The revealed differences in domain growth in bulk LN and LNOI were attributed to the higher bulk conductivity of LNOI. The obtained influence of humidity on the shape and growth of isolated domains was attributed to the water meniscus. Analysis of the transition between the “forward growth” and “sideways growth” stages was performed by switching to the stripe electrode. A sand-glass-shaped domain was formed due to growth in the opposite direction after the domain touched the electrode. Stable periodical domain structures down to 300 nm were created and characterized in LNOI. Highly ordered comb-like domains of various alternating lengths, including four- and eight-fold increase periods, were produced by performing biased tip scanning along the Y axis. The obtained knowledge is important for the future development of nanodomain engineering methods in monocrystalline ferroelectric thin films on insulators.

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Submicron periodical poling by local switching in ion sliced lithium niobate thin films with a dielectric layer

Cited by 9 publications

References 45 publications

Kinetics of the Domain Structure in Uniform Electric Field in LiNbO₃ with Surface Layer Modified by Soft Proton Exchange

Kinetics of the Domain Structure in Uniform Electric Field in LiNbO₃ with Surface Layer Modified by Soft Proton Exchange

Thermal Spike Responses and Structure Evolutions in Lithium Niobate on Insulator (LNOI) under Swift Ion Irradiation

Evolution of Nanodomains and Formation of Self-Organized Structures during Local Switching in X-Cut LNOI

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Submicron periodical poling by local switching in ion sliced lithium niobate thin films with a dielectric layer

Cited by 9 publications

References 45 publications

Kinetics of the Domain Structure in Uniform Electric Field in LiNbO3 with Surface Layer Modified by Soft Proton Exchange

Kinetics of the Domain Structure in Uniform Electric Field in LiNbO3 with Surface Layer Modified by Soft Proton Exchange

Thermal Spike Responses and Structure Evolutions in Lithium Niobate on Insulator (LNOI) under Swift Ion Irradiation

Evolution of Nanodomains and Formation of Self-Organized Structures during Local Switching in X-Cut LNOI

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Kinetics of the Domain Structure in Uniform Electric Field in LiNbO₃ with Surface Layer Modified by Soft Proton Exchange

Kinetics of the Domain Structure in Uniform Electric Field in LiNbO₃ with Surface Layer Modified by Soft Proton Exchange