Results 141 to 150 of about 30,832 (224)

Tunable Terahertz Generation in Dispersion‐Engineered ZnTe Waveguides

open access: yesLaser &Photonics Reviews, EarlyView.
A dispersion‐engineered Zinc Telluride (ZnTe) slab waveguide platform enables tunable and efficient guided‐wave terahertz (THz) generation through modal phase matching. By tailoring the optical and THz modal dispersion, coherent THz emission is achieved across 0.1–3 THz.
Arun Jana   +5 more
wiley   +1 more source

Reconfigurable Geometric Phase Matching by Multilayered Nonlinear Thin‐Film Crystals

open access: yesLaser &Photonics Reviews, EarlyView.
The concept of geometric phase matching is demonstrated as a dynamically reconfigurable approach for tunable nonlinear wave mixing in multilayered nonlinear thin‐film crystals. Experimental results reveal full modulation in a bilayer structure and near‐perfect spin‐selective phase matching of second‐harmonic generation in an eight‐layer configuration ...
Danielle Ben‐Haim   +3 more
wiley   +1 more source

Multispectral Mid‐Infrared Imaging With Incoherent Light via Adiabatic Upconversion

open access: yesLaser &Photonics Reviews, EarlyView.
We demonstrate room‐temperature broadband MIR imaging based on adiabatic frequency upconversion, driven by a Q‐switched pump laser and incoherent illumination. The small‐foot‐print system upconverts the spectral range to the visible domain, without scanning, thermal control and with spatial resolution below 20μm$20\mathrm{\mu}\mathrm{m}$.
Daniel Beitner   +4 more
wiley   +1 more source

Stroke Following Facial Laser Resurfacing Procedure—A Case Report

open access: yesLasers in Surgery and Medicine, EarlyView.
ABSTRACT Objectives To describe the first reported case of embolic stroke with hemorrhagic conversion following a dermatologic energy‐based device procedure, highlighting its mechanism and clinical implications. Methods A detailed case review was conducted, including clinical presentation, imaging, and subsequent diagnostic workup. The patient provided
Tal Levy, Joel L. Cohen
wiley   +1 more source

Thermal Injury Producing Melanoma‐Like Features on Reflectance Confocal Microscopy

open access: yesLasers in Surgery and Medicine, EarlyView.
ABSTRACT Objectives Reflectance confocal microscopy (RCM) improves diagnostic specificity for equivocal pigmented lesions; however, certain conditions may mimic melanoma and limit its accuracy. We aimed to characterize RCM features of thermally injured lesions that mimic melanoma.
Noa Kremer   +5 more
wiley   +1 more source

Age-Related Immune Response to Previous Smallpox Vaccination in Albanian Subjects and Cross-Reactivity Between Vaccinia Virus and Monkeypox Virus Antigens. [PDF]

open access: yesVaccines (Basel)
Manuka A   +7 more
europepmc   +1 more source

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