Results 91 to 100 of about 1,470 (196)

Broadband Parametric Amplification in AlGaAs‐on‐Insulator Nanowaveguides

open access: yesLaser &Photonics Reviews, EarlyView.
Harnessing the exceptional nonlinearity of AlGaAs‐on‐insulator nanowaveguides, four‐wave‐mixing parametric amplification achieves a record net on‐chip gain of 56 dB and a gain bandwidth exceeding 415 nm at telecom wavelengths. These results establish AlGaAsOI as a powerful platform for compact, high‐performance integrated nonlinear optical ...
Yanjing Zhao   +6 more
wiley   +1 more source

Laser‐Induced‐Structural Transformation in Ti3CNTx MXene Monitored by Raman Spectroscopy with DFT Insight

open access: yesSmall, EarlyView.
A multi‐wavelength Raman study of microwave‐assisted hydrothermal Ti3CNTx MXene, supported by theoretical calculations, identifies laser‐power thresholds and evaluates its ambient‐condition stability. ABSTRACT MXenes are emerging 2D nanomaterials that have attracted growing attention for their highly tunable atomic structure, composition, and surface ...
Subrata Ghosh   +7 more
wiley   +1 more source

Nonreciprocal vortex isolator via topology-selective stimulated Brillouin scattering. [PDF]

open access: yesSci Adv, 2022
Zeng X   +5 more
europepmc   +1 more source

“White and Clear” (WaC): A tunable hydrophilic tissue clearing strategy for multi‐species 3D imaging

open access: yesVIEW, EarlyView.
Optical tissue clearing methods help scientists make tissues transparent to image structures deep inside organs in 3D, but many existing techniques are limited in performance and difficulty. In this study, we developed an optimized clearing method called WaC (White and Clear), which improves upon existing techniques by combining efficient tissue ...
Vicente Llorente   +12 more
wiley   +1 more source

Research on the System of Pulse Synthesis Pre-pump Rayleigh BOTDA technology

open access: yesMATEC Web of Conferences, 2015
The conventional Rayleigh scattering Brillouin Optical Time Domain Analysis (Rayleigh BOTDA) system adopted the leakage light ahead of the pump pulse to generate Rayleigh back-scattering light.
Shang Qiufeng   +3 more
doaj   +1 more source

Guided-acoustic stimulated Brillouin scattering in silicon nitride photonic circuits. [PDF]

open access: yesSci Adv, 2022
Botter R   +13 more
europepmc   +1 more source

Ultranarrow-linewidth stimulated Brillouin scattering with fundamental acoustic waves

open access: yesAPL Photonics
Stimulated Brillouin scattering is a well-known nonlinear optical interaction valued for applications including narrow-linewidth lasers, phase conjugation, sensing, and RF-signal processing such as delay lines and filters.
Wendao Xu   +5 more
doaj   +1 more source

Selective Optical Properties of Cement for Enhanced Radiative Cooling and Energy‐Efficient Construction Materials

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
Cement phases are good materials for radiative cooling thanks to the selective emissivity in IR ATW. Cement powders have high reflectance of solar radiation which reduces the thermal losses. The onset of the absorption curves is defined by bound excitons. Sulfates have higher radiated powers and reflectance than calcium silicates.
Jozef Janovec   +3 more
wiley   +1 more source

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