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View article: Data and Knowledge Dual-Driven Creep Life Prediction for Austenitic Heat-Resistance Steel
Data and Knowledge Dual-Driven Creep Life Prediction for Austenitic Heat-Resistance Steel Open
Traditional creep life prediction methods are generally difficult for researchers to fully consider the key factors affecting the creep performance, which limits their application in the research and development of new alloys. The artifici…
View article: Characterization of Indium Tin Oxide (ITO) Thin Films towards Terahertz (THz) Functional Device Applications
Characterization of Indium Tin Oxide (ITO) Thin Films towards Terahertz (THz) Functional Device Applications Open
In this study, we explored the manipulation of optical properties in the terahertz (THz) frequency band of radio-frequency (RF) sputtered indium tin oxide (ITO) thin films on highly resistive silicon substrate by rapid thermal annealing (R…
View article: Characterization of Indium Tin Oxide (ITO) Thin Films Towards Terahertz (THz) Functional Device Applications
Characterization of Indium Tin Oxide (ITO) Thin Films Towards Terahertz (THz) Functional Device Applications Open
In this study, we explored the manipulation of optical properties in the terahertz (THz) frequency band of radio-frequency (RF) sputtered indium-tin-oxide (ITO) thin-films on highly resistive silicon substrate by rapid thermal annealing (R…
View article: Characterization of Indium Tin Oxide (ITO) Thin Films Towards Terahertz (THz) Functional Device Applications
Characterization of Indium Tin Oxide (ITO) Thin Films Towards Terahertz (THz) Functional Device Applications Open
In this study, we explored terahertz (THz) optical properties of the as-deposited and rapid thermal annealing (RTA) at 400°C, 600°C and 800°C of indium-tin-oxide (ITO) thin-films sputtered on high-resistivity silicon (HR-Si) substrate. We …
View article: Absorption dispersion below boson peak frequency in oxide glasses studied by THz-time domain spectroscopy
Absorption dispersion below boson peak frequency in oxide glasses studied by THz-time domain spectroscopy Open
The dispersion properties of the absorption coefficients [α(ν)] of different multi-component silicate oxide glasses have been studied in the frequency region below the boson peak by using THz-time-domain spectroscopy. The value of α(ν)/ν2 …
View article: Systematic Characterization of High-Dielectric Constant Glass Materials Using THz-TDS Technique
Systematic Characterization of High-Dielectric Constant Glass Materials Using THz-TDS Technique Open
High-dielectric constant glasses are prerequisite for developing terahertz (THz) components and systems. Oxyfluorosilicate (OFS) glasses have been developed and their THz properties have been characterized by using THz-time domain spectros…
View article: Enhanced Optically–Excited THz Wave Emission by GaAs Coated with a Rough ITO Thin Film
Enhanced Optically–Excited THz Wave Emission by GaAs Coated with a Rough ITO Thin Film Open
In this study, we report enhancement of terahertz (THz) radiation with indium-tin-oxide (ITO) thin-film deposited on semi-insulating gallium arsenide substrate (SI-GaAs). The amplitude of THz emission from both ITO/SI-GaAs and bare SI-GaAs…
View article: Electrically tunable dual-layer twisted nematic liquid crystal THz phase shifters with intermediate composite polymer thin film
Electrically tunable dual-layer twisted nematic liquid crystal THz phase shifters with intermediate composite polymer thin film Open
We demonstrate electrically tunable twisted nematic (TN) aligned liquid crystal (LC) terahertz phase shifters with a novel structure, in which a single LC composite polymer thin film is inserted in the middle of the LC cell. For designing …
View article: Interrelationship among dielectric constant, energy band parameters and ionicity in multi-component oxide glasses revealed by optical- and THz-band spectroscopy
Interrelationship among dielectric constant, energy band parameters and ionicity in multi-component oxide glasses revealed by optical- and THz-band spectroscopy Open
The dielectric constant, energy band parameters and ionicity are key physical parameters for fully understanding the dielectric properties of glasses, but their mutual interrelationship and its applicability to a wide variety of multi-comp…
View article: Systematic characterization of THz dielectric properties of multi-component glasses using the unified oscillator model
Systematic characterization of THz dielectric properties of multi-component glasses using the unified oscillator model Open
A terahertz (THz) dielectric property characterization method based on a unified single oscillator model has been developed and applied to a variety of multi-component silicate oxide glasses. The experimental values of dielectric constant …
View article: Effects of O2 Plasma Treatments on the Photolithographic Patterning of PEDOT: PSS
Effects of O2 Plasma Treatments on the Photolithographic Patterning of PEDOT: PSS Open
Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is known for its potential to replace indium-tin oxide in various devices.Herein, when fabricating finger-type PEDOT:PSS electrodes using conventional photolithography, th…
View article: Effects of O2 Plasma Treatments on the Photolithographic Patterning of PEDOT:PSS
Effects of O2 Plasma Treatments on the Photolithographic Patterning of PEDOT:PSS Open
Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is known for its potential to replace indium–tin oxide in various devices. Herein, when fabricating finger-type PEDOT:PSS electrodes using conventional photolithography, t…
View article: Room-temperature crystallization of amorphous silicon by near-UV femtosecond pulses
Room-temperature crystallization of amorphous silicon by near-UV femtosecond pulses Open
Near ultraviolet (λ ≈ 400 nm) femtosecond laser annealing (400 nm-FLA) in a scanning mode was employed to crystallize amorphous silicon (a-Si) films at room temperature. The average grain size of polycrystalline silicon annealed was studie…
View article: High refractive index properties of oxyfluorosilicate glasses and a unified dielectric model of silicate oxide glasses in the sub-terahertz frequency region
High refractive index properties of oxyfluorosilicate glasses and a unified dielectric model of silicate oxide glasses in the sub-terahertz frequency region Open
Dielectric properties of oxyfluorosilicate (OFS) glasses have been characterized using Terahertz (THz)-time domain spectroscopy in the sub-THz region as well as optical reflection measurement. OFS glass containing 20 mol% of Nb 2 O 5 , whi…
View article: Liquid-crystal-based magnetically tunable terahertz achromatic quarter-wave plate
Liquid-crystal-based magnetically tunable terahertz achromatic quarter-wave plate Open
Development of the wideband and tunable quasi-optic terahertz (THz) components is in high demand. In this work, we demonstrate a tunable achromatic quarter-wave plate (AQWP) for the THz frequency range. The phase retardation of this device…
View article: Multi-frame speckle reduction in OCT using supercontinuum pumped by noise-like pulses
Multi-frame speckle reduction in OCT using supercontinuum pumped by noise-like pulses Open
In most coherent imaging modality, speckle noise is a major cause that blurs the boundary of tissues and degrades the image contrast. By utilizing the unique properties of supercontinuum (SC) generated by noise-like pulses (NLPs) and a sim…
View article: Twisted Nematic Liquid-Crystal-Based Terahertz Phase Shifter using Pristine PEDOT: PSS Transparent Conducting Electrodes
Twisted Nematic Liquid-Crystal-Based Terahertz Phase Shifter using Pristine PEDOT: PSS Transparent Conducting Electrodes Open
For this study, we demonstrated three different types of twisted nematic (TN) liquid crystal (LC) terahertz (THz) phase shifters using pristine poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS) thin films as transparent …
View article: High-Transmittance 2π Electrically Tunable Terahertz Phase Shifter with CMOS-Compatible Driving Voltage Enabled by Liquid Crystals
High-Transmittance 2π Electrically Tunable Terahertz Phase Shifter with CMOS-Compatible Driving Voltage Enabled by Liquid Crystals Open
We have investigated tunable terahertz (THz) phase shifters that are based on a sandwiched liquid crystal (LC) cell with indium–tin–oxide (ITO) nanowhiskers (NWhs) as transparent electrodes. More than 360° of phase shift at 1.0 THz was ach…
View article: Automatic Generation of Noise-Like or Mode-Locked Pulses in an Ytterbium-Doped Fiber Laser by Using Two-Photon-Induced Current for Feedback
Automatic Generation of Noise-Like or Mode-Locked Pulses in an Ytterbium-Doped Fiber Laser by Using Two-Photon-Induced Current for Feedback Open
We present a simple, reliable, and fast method to automatically generate noise-like or mode-locked pulses in a fiber laser. To generate the targeted pulses, we employed two-photon-induced current from a photocell as the feedback signal to …
View article: Frequency-Synthesized Approach to High-Power Attosecond Pulse Generation and Applications: Applications
Frequency-Synthesized Approach to High-Power Attosecond Pulse Generation and Applications: Applications Open
In part I of this work, we present the design, construction and diagnostics of a new scheme of generating high-power attosecond pulses and arbitrary waveforms by multicolor synthesis. In this chapter, we demonstrate selected applications o…
View article: Frequency-Synthesized Approach to High-Power Attosecond Pulse Generation and Applications: Generation and Diagnostics
Frequency-Synthesized Approach to High-Power Attosecond Pulse Generation and Applications: Generation and Diagnostics Open
We present a new scheme of generating high-power attosecond pulses and arbitrary waveform synthesis by multicolor synthesis. The full bandwidth of the multicolor laser system extends more than two-octaves and reaches 37,600 cm−1 which can …
View article: Liquid-Crystal-Based Phase Gratings and Beam Steerers for Terahertz Waves
Liquid-Crystal-Based Phase Gratings and Beam Steerers for Terahertz Waves Open
We review our theoretical and experimental studies on a class of liquid crystal (LC) photonic devices, i.e., terahertz (THz) phase gratings and beam steerers by using LCs. Such gratings can function as a THz polarizer and tunable THz beam …
View article: Handedness-Switchable Optical Chirality in One-Dimensional Periodic Plasmonic-Grooves for Circular Dichroism and Simultaneous Refractive Index Sensing
Handedness-Switchable Optical Chirality in One-Dimensional Periodic Plasmonic-Grooves for Circular Dichroism and Simultaneous Refractive Index Sensing Open
Through a numerical study, we proposed and demonstrated that the one-dimensional periodic plasmonic-grooves (1D-PPG) can give rise to a super chiral field inside grooves under normal illumination with off-groove linear polarization. The ha…
View article: Nanostructured Indium Tin Oxides and Other Transparent Conducting Oxides: Characteristics and Applications in the THz Frequency Range
Nanostructured Indium Tin Oxides and Other Transparent Conducting Oxides: Characteristics and Applications in the THz Frequency Range Open
Transparent conductors are essential for optoelectronic components operating in the far-infrared or terahertz (THz) frequency range. Indium tin oxide (ITO), extensively used in the visible, is semi-transparent in the far-infrared frequency…
View article: Laser Ablation of Polymethylmethacrylate (PMMA) by Phase- Controlled Femtosecond Two-Color Synthesized Waveforms
Laser Ablation of Polymethylmethacrylate (PMMA) by Phase- Controlled Femtosecond Two-Color Synthesized Waveforms Open
Single-shot laser ablation of polymethylmethacrylate (PMMA) was studied using dual-color waveform synthesis of the fundamental (ω) and its second harmonic (2ω) of a femtosecond Ti: Sapphire laser. Changing the relative phase of the fundame…
View article: Fiber-laser-generated Noise-like Pulses and Their Applications
Fiber-laser-generated Noise-like Pulses and Their Applications Open
We describe generation and amplification of medium- and high-energy noise-like pulses (NLPs) using Yb-doped optical fibers. We also demonstrate supercontinuum (SC) generation techniques in which NLPs serve as the pump. SC pumped by NLPs ha…