Results 231 to 240 of about 654,790 (349)

Recent Advances in χ(2)‐Based Nonlinear Frequency Conversion of Fiber Lasers

open access: yesAdvanced Photonics Research, EarlyView.
Visible and mid‐infrared fiber lasers, enabled by nonlinear frequency conversion of fiber lasers, offer several advantages such as high efficiency, excellent wavelength tunability, high power, and superior beam quality that are highly desirable for practical applications. This study provides a comprehensive review of recent research progress in the χ(2)
Bing Han   +10 more
wiley   +1 more source

Anisotropy of Second‐Harmonic Generation in SnSe Flakes with Ferroelectric Stacking

open access: yesAdvanced Photonics Research, EarlyView.
Giant second‐harmonic generation (SHG) susceptibility, on the order of 1000 pm V−1, in SnSe with ferroelectric stacking is demonstrated by theoretical and experimental methods. SHG microscopy is utilized to study few‐layer ferroelectric SnSe flakes on mica substrates. Stripe‐like features in SHG mapping indicate ferroelectric domains. Strong wavelength‐
Li‐Tien Huang   +9 more
wiley   +1 more source

Analysis of pulse wave velocity and autonomic function in chronic hemodialysis patients

open access: bronze, 2004
Taeko Suenaga   +4 more
openalex   +2 more sources

Review of Coherent Anti‐Stokes Raman Scattering Nonresonant Background Removal and Phase Retrieval Approaches: From Experimental Methods to Deep Learning Algorithms

open access: yesAdvanced Photonics Research, EarlyView.
Coherent anti‐stokes Raman spectroscopy (CARS) enables high‐resolution vibrational imaging, yet non‐resonant background (NRB) distorts spectral fidelity. This review highlights NRB removal methods—from experimental strategies and numerical algorithms to emerging deep learning techniques.
Rajendhar Junjuri, Thomas Bocklitz
wiley   +1 more source

Longitudinal dynamics of pulse wave velocity in the days after acute ischaemic stroke: prospective cohort study. [PDF]

open access: yesBMJ Open
Moelgg K   +9 more
europepmc   +1 more source

Pulse Wave Velocity Predicts Cardiovascular Mortality-Findings From the Hawaii-Los Angeles-Hiroshima Study-

open access: bronze, 2005
Tomoki Shokawa   +7 more
openalex   +2 more sources

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