Acoustic superlattice of LiNbO3 crystals and its applications to bulk-wave transducers for ultrasonic generation and detection up to 800 MHz

Zhu, Yanyan; Ming, Nai‐Ben; Jiang, Wenhua; Shui, Yongan

doi:10.1063/1.100455

Cited by 66 publications

(13 citation statements)

References 5 publications

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“…In our simulation above, we assume the collinear propagated acoustic wave is coupled from an external transducer, which could be bonded directly to a PPLN. However, in addition to nonlinear optical coefficient, the piezoelectric coefficient changes its sign periodically in a PPLN, it also could act as an acoustic superlattice to generate high-frequency bulk acoustic waves [14]. One unique advantage of acoustic superlattice is cross-field excitation.…”

Section: Theory and Simulationmentioning

confidence: 99%

Acousto-optic tunable second harmonic generation in periodically poled LiNbO_3

Yu¹,

Xu²,

Leng³

et al. 2009

Opt. Express

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Acousto-optic (AO) tunable second harmonic generation (SHG) was proposed in periodically poled lithium niobate (PPLN). The acoustic wave could either be induced from an external transducer or self-generated in PPLN driving with a cross-field radio frequency field. The reciprocal vector of PPLN compensates the SHG wave-vector mismatch when quasi-phase- matching (QPM) condition is satisfied, while phonons with suitable frequencies may affect it by scattering photons to different polarization state. The QPM SHG and AO polarization rotation are coupled together. Second harmonic waves' intensities, polarization states and even phases thus could be manipulated instantly through AO interaction.

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Section: Theory and Simulationmentioning

confidence: 99%

Acousto-optic tunable second harmonic generation in periodically poled LiNbO_3

Yu¹,

Xu²,

Leng³

et al. 2009

Opt. Express

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“…[10,67] For transducers made of ordinary material, such as a single-domain LN wafer, the static capacitance is the main part of the impedance at the resonance frequency under high-frequency operation. As a result, the insertion loss of the transducer is very high.…”

Section: Transducers Made Of Ln Superlatticesmentioning

confidence: 99%

Superlattices and Microstructures of Dielectric Materials

Ming¹

1999

Adv. Mater.

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Light as an information carrier has several advantages over electrons: it can carry a larger amount of information at a greater speed in dielectric materials than electrons can in a metallic wire, the bandwidth of a dielectric material is much larger than that of a metal, and energy losses are reduced. In this review, the construction and nonlinear optical and piezoelectric properties of dielectric superlattices are discussed. It is shown that these microstructured materials have a significant effect on optic and acoustic wave processes and that the microstructure can be controlled using modern experimental techniques.

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“…This single crystals can be elaborated in different cut types which affect their properties [1]. It has been widely used in ultrasonic transducers for high frequencies applications [2,3]. Ultrasonic transducers are used to generate and receive guided ultrasonic waves.…”

Section: Introductionmentioning

confidence: 99%

Lithium Niobate Micro-transducers matrix design

et al. 2019

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In this work, a two-dimensional (2D) Lithium Niobate (LiNbO3) 36°Y-cut micro-transducers (μTs) matrix design is presented. Two main steps define the fabrication process: electrode deposition and photolithography. These steps are preceded by the optical mask conception, which defines the 2D matrix pattern. In contrary to the one element case, this μTs matrix allows to automatically scan a desired structure in real time. The μTs matrix is characterized using an impedance analyzer. Furthermore, the experimental tests carried out in order to demonstrate the matrix functionality at low frequencies [200 - 800] kHz are presented.

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Acoustic superlattice of LiNbO3 crystals and its applications to bulk-wave transducers for ultrasonic generation and detection up to 800 MHz

Cited by 66 publications

References 5 publications

Acousto-optic tunable second harmonic generation in periodically poled LiNbO_3

Acousto-optic tunable second harmonic generation in periodically poled LiNbO_3

Superlattices and Microstructures of Dielectric Materials

Lithium Niobate Micro-transducers matrix design

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