Linear and Nonlinear Optical Properties of Ferroelectric Thin Films

Gu, Bing; Wang, Hui-Tian

doi:10.5772/16525

Cited by 8 publications

(4 citation statements)

References 39 publications

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“…The oscillations in the transmittance in the near-infrared region are a result of the interference of light reflected at the air–membrane and membrane–substrate interfaces. The pronounced and clean interference pattern indicates a relatively smooth surface and uniform thickness of the membrane 49 . These optical properties indicate potential applications of BN membranes for ultraviolet shielding/protection.…”

Section: Resultsmentioning

confidence: 96%

Boron nitride colloidal solutions, ultralight aerogels and freestanding membranes through one-step exfoliation and functionalization

et al. 2015

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Manufacturing of aerogels and membranes from hexagonal boron nitride (h-BN) is much more difficult than from graphene or graphene oxides because of the poor dispersibility of h-BN in water, which limits its exfoliation and preparation of colloidal solutions. Here, a simple, one-step mechano-chemical process to exfoliate and functionalize h-BN into highly water-dispersible, few-layer h-BN containing amino groups is presented. The colloidal solutions of few-layer h-BN can have unprecedentedly high concentrations, up to 30 mg ml−1, and are stable for up to several months. They can be used to produce ultralight aerogels with a density of 1.4 mg cm−3, which is ∼1,500 times less than bulk h-BN, and freestanding membranes simply by cryodrying and filtration, respectively. The material shows strong blue light emission under ultraviolet excitation, in both dispersed and dry state.

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Section: Resultsmentioning

confidence: 96%

Boron nitride colloidal solutions, ultralight aerogels and freestanding membranes through one-step exfoliation and functionalization

et al. 2015

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“…In the case of linear optics, the polarization depends linearly on the electric field. However, the light induced polarization can be expressed as a power series in the electric field in the nonlinear optics, in which χ (1) is the linear susceptibility, while χ (2) and χ (3) are the second-and third-order nonlinear optical susceptibilities of the material, respectively [183,185]. Recently, nonlinear optical materials have attracted tremendous interest in a wide range of applications, such as photonics, nano-photonics, bio-photonics, and quantum photonics [186,187].…”

Section: Nonlinear Optical Propertiesmentioning

confidence: 99%

Dawn of nitride ferroelectric semiconductors: from materials to devices

Wang

Mondal

et al. 2023

Semicond. Sci. Technol.

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III-nitride semiconductors are promising optoelectronic and electronic materials and have been extensively investigated in the past decades. New functionalities, such as ferroelectricity, ferromagnetism, and superconductivity, have been implanted into III-nitrides to expand their capability in next-generation semiconductor and quantum technologies. The recent experimental demonstration of ferroelectricity in nitride materials, including ScAl(Ga)N, BAlN, and hBN, has inspired tremendous research interest. Due to the large remnant polarization, high breakdown field, high Curie temperature, and significantly enhanced piezoelectric, linear, and nonlinear optical properties, nitride ferroelectric semiconductors have enabled a wealth of applications in electronic, ferroelectronic, acoustoelectronic, optoelectronic, and quantum devices and systems. In this review, the development of nitride ferroelectric semiconductors from materials to devices is discussed. While expounding on the unique advantages and outstanding achievements of nitride ferroelectrics, the existing challenges and promising prospects have been also discussed.

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“…The interaction of high-intensity laser pulses with optical materials results in nonlinear optical (NLO) processes. These nonlinear optical processes involve the nonlinear absorption (NLA) coe cient and the nonlinear refractive (NLR) index of the material [31,32]. The most straightforward technique for investigating the NLO properties of materials is the z-scan technique, which is used to characterize various optical materials [33].…”

Section: Introductionmentioning

confidence: 99%

Thickness-dependent nonlinear optical properties of ITO thin films

et al. 2023

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The nonlinear absorption (NLA) properties of ITO thin lms were performed by utilizing femtosecond (100 fs), a high-repetition rate (80 MHz), and near-infrared (NIR) (750-820 nm) laser pulses. A radio frequency (RF) magnetron sputtering system was used to prepare ITO thin lms of two different thicknesses. A scanning electron microscope (SEM) was used to determine the lm thickness, and a UV-Visible spectrophotometer was used to observe the linear optical properties of the thin lms. The open aperture Z-scan technique's nonlinear absorption studies of ITO thin lms exhibited a reverse saturable absorption. The NLA properties of the ITO lms varied depending on ITO thickness, incident laser power, and excitation wavelength, attributed to the increasing localized defect states in the band gap. The nonlinear absorption coe cient of 6×10 − 7 cm/W and 9.7×10 − 7 cm/W were measured for 170 and 280 nm lm thicknesses, respectively. In contrast to the lm thickness, the nonlinear absorption coe cient was inversely proportional to the excitation laser wavelength. Additionally, the optical limiting of ITO thin lms was investigated, and it was found that there is a clear correlation between optical limiting and thin lm thickness.

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Linear and Nonlinear Optical Properties of Ferroelectric Thin Films

Cited by 8 publications

References 39 publications

Boron nitride colloidal solutions, ultralight aerogels and freestanding membranes through one-step exfoliation and functionalization

Boron nitride colloidal solutions, ultralight aerogels and freestanding membranes through one-step exfoliation and functionalization

Dawn of nitride ferroelectric semiconductors: from materials to devices

Thickness-dependent nonlinear optical properties of ITO thin films

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