Results 81 to 90 of about 1,816,894 (319)

Guided-wave Brillouin scattering in air [PDF]

open access: yes, 2016
Here we identify a new form of optomechanical coupling in gas-filled hollow-core fibers. Stimulated forward Brillouin scattering is observed in air in the core of a photonic bandgap fiber.
W. Renninger, R. Behunin, P. Rakich
semanticscholar   +1 more source

Reversible Hydration Tuning of Polar Order and Large Nonlinear Optical Response in a 2D van der Waals Crystal, LiInP2S6

open access: yesAdvanced Materials, EarlyView.
Hydration‐induced symmetry breaking transforms layered LiInP2S6${\rm LiInP}_2{\rm S}_6$ from a nonpolar to a chiral‐polar phase, producing a giant enhancement of non‐resonant second‐harmonic generation. The reversible tuning of polar order through molecular intercalation establishes a strategy for dynamically controlling nonlinear optical ...
Jadupati Nag   +8 more
wiley   +1 more source

Closed‐Loop Solid‐State Synthesis Planning for Materials Discovery With Large Language Models

open access: yesAdvanced Materials, EarlyView.
Leveraging literature data, we build a large‐language‐model‐driven workflow that extracts synthesis steps from 4407 papers, retrieves similar precedents, and generates candidate solid‐state synthesis recipes. The system benchmarks against ground‐truth and then operates in a closed loop with experiments to synthesize oxy‐selenide electrolyte materials ...
Dong Won Jeon   +9 more
wiley   +1 more source

Uncertainty Estimation for the Brillouin Frequency Shift Measurement Using a Scanning Tandem Fabry–Pérot Interferometer

open access: yesMicromachines, 2023
The expanded uncertainty of the measured Brillouin scattering shift frequencies is essential in assessing the measurements of parameters of various materials. We describe the general operation principles of a Brillouin light scattering (BLS) spectrometer
Patrice Salzenstein, Thomas Y. Wu
doaj   +1 more source

Short-pulse amplification by strongly coupled stimulated Brillouin scattering [PDF]

open access: yes, 2016
We examine the feasibility of strongly coupled stimulated Brillouin scattering as a mechanism for the plasma-based amplification of sub-picosecond pulses.
M. R. Edwards   +3 more
semanticscholar   +1 more source

Metamaterial control of stimulated Brillouin scattering. [PDF]

open access: yesOptics Letters, 2016
Using full opto-acoustic numerical simulations, we demonstrate enhancement and suppression of the SBS gain in a metamaterial comprising a subwavelength cubic array of dielectric spheres suspended in a dielectric background material.
Mike Smith   +5 more
semanticscholar   +1 more source

Direct Observation of Propagating Spin Waves in a Spin Hall Nano‐Oscillator

open access: yesAdvanced Materials, EarlyView.
By combining frequency injection locking with time‐resolved scanning transmission x‐ray microscopy (TR‐STXM), the authors image the real‐time magnetization dynamics of a spin Hall nano‐oscillator (SHNO) for the first time. Their results reveal richer dynamics than previously reported and challenge existing assumptions regarding the radiation hardness ...
Victor H. González   +12 more
wiley   +1 more source

Highly localized distributed Brillouin scattering response in a photonic integrated circuit

open access: yes, 2018
The interaction of optical and acoustic waves via stimulated Brillouin scattering (SBS) has recently reached on-chip platforms, which has opened new fields of applications ranging from integrated microwave photonics and on-chip narrow-linewidth lasers ...
A. Zarifi   +8 more
semanticscholar   +1 more source

Brillouin scattering in neopentane

open access: yesMolecular Physics, 1977
Brillouin scattering experiments have been performed in the liquid phase of neopentane near the liquid-plastic crystal transition. The spectra are well represented by a sum of three lorentzians. No evidence was found for the possible existence of an additional central peak corresponding to a thermal relaxation mode.
Wergin, Alexander   +2 more
openaire   +2 more sources

A Universal van der Waals Tunneling Injector for Monolayer CMOS

open access: yesAdvanced Materials, EarlyView.
A universal van der Waals injector unlocks polarity‐flexible tunneling contacts for monolayer CMOS. SnSe2, an intrinsically degenerate 2D semiconductor, establishes polarity‐specific band alignments with both WSe2 and MoS2 channels, enabling steep switching, high on/off ratios, and a unified route to low‐power 2D logic.
Hanbin Cho   +17 more
wiley   +1 more source

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