Results 101 to 110 of about 526,651 (246)

Achromatic hybrid refractive-diffractive lens with extended depth of focus

, 2004
A method for designing achromatic hybrid refractive-diffractive elements that can produce beams with long focal depths while they preserve the entire aperture for capture of light and high transverse resolution is presented.
Michael R. Wang, Yang, Jame J, Jame J. Yang, Wang, Michael R, Angel Flores, Flores, Angel   +5 more
core   +1 more source

Helicity‐Dependent All‐Optical Switching in Bi,Ga‐Substituted Rare‐Earth Iron Garnet Films Driven by Orbital Magnetic Moment

Advanced Optical Materials, EarlyView.
Helicity‐dependent all‐optical magnetization switching was demonstrated for the Bi‐ and Ga‐substituted rare‐earth (R) iron garnet crystal thin films (Bi,Ga:RIG; R = Eu3+, Nd3+, and Y3+). The efficiency followed the order EIG > NIG > YIG. These results show the correlation between 4f orbital moment (4f〈L〉) of R3+ and helicity‐dependent optical ...
Ayumu Hata, Ryuichiro Asatani, Saiki Suzuki, Md Abdullah Al Masud, Hotaka Sakaguchi, Jun Okabayashi, Shinji Isogami, Takayuki Ishibashi   +7 more
wiley   +1 more source

Compact achromatic optical Fourier transform system using geometric-phase lenses

JPhys Photonics
In this work we present a new configuration to achieve an achromatic all-optical Fourier transform (FT) using two blazed diffractive lenses and one non-dispersive lens.
Ignacio Moreno, Santiago Ríos-Álvarez, Pascuala García-Martínez, David Marco, María del Mar Sánchez-López   +4 more
doaj   +1 more source

Multi-Focal Diffractive Lens by Apodized Phase Photon Sieves

Gazi Üniversitesi Fen Bilimleri Dergisi
As a result of the invention of photon sieves and the implementation of apodization to these sieves, significant design freedom has been achieved in diffractive optical elements (DOEs).
Ahmet Ünal
doaj   +1 more source

Quasi non-diffractive electron Bessel beams using direct phase masks with applications in electron microscopy

New Journal of Physics, 2019
Electron-beam shaping opens up novel imaging possibilities in electron microscopy (EM). The implementation of a phase or amplitude mask in the condenser lens system allows the generation of electron beams with various shapes. Non-diffractive Bessel beams
Simon Hettler, Lukas Grünewald, Marek Malac   +2 more
doaj   +1 more source

755-nm Alexandrite Picosecond Laser with a Diffractive Lens Array or Zoom Handpiece for Post-Inflammatory Hyperpigmentation: Two Case Reports with a Three-Year Follow-Up. [PDF]

Clin Cosmet Investig Dermatol, 2021
Ren R, Bao S, Qian W, Zhao H.
europepmc   +1 more source

Hybridization of Gap Plasmons and Grating‐Coupled Surface Plasmon Polaritons in Metal Nanoparticle Cluster Arrays on a Mirror

Advanced Optical Materials, EarlyView.
Here we use a template‐assisted self‐assembly approach of metal colloids onto metal films to produce hybrid plasmonic metasurfaces that integrate nanoparticle‐on‐mirror cavities with periodic metal colloid arrays. The resulting coupling between gap plasmons and grating‐coupled surface plasmon polaritons enables programmable hybrid modes with tailored ...
Afroditi Koutsogianni, Xiaoyu Qi, Jose Mendoza‐Carreño, Pedro Moronta, Maria Isabel Alonso, David B. Amabilino, Agustín Mihi   +6 more
wiley   +1 more source

Liquid Lens Optical Design for Adjustable Laser Spot Array for the Laser-Based Three-Dimensional Reconstruction of Vocal Fold Oscillations

Optics
Standard endoscopy of vocal folds is in general limited to two-dimensional imaging. Laser-based 3D imaging offers not only absolute measurements but also the possibility of assessing all three spatial directions. However, due to human inter-individuality,
Benjamin Haas, Rose Mary, Kristian Cvecek, Clemens Roider, Michael Schmidt, Michael Döllinger, Marion Semmler   +6 more
doaj   +1 more source

Visible‐Blind Near‐Infrared Organic Vision Sensors for Imaging in Adverse Environmental Conditions

Advanced Optical Materials, EarlyView.
This work presents high‐performance visible‐blind NIR OPDs enabled by a multilayer optical modulation layer. The devices achieve strong visible‐light suppression and enhanced NIR sensitivity, enabling robust imaging in foggy or low‐light environments.
Baozhong Deng, Kean Lu, Zhouyi Lu, Yi Li, Gaoyu Dai, Luqiao Yin, Zihan Wang, Bruno Grandidier, Tao Xu, Furong Zhu   +9 more
wiley   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna, Jieliyue Sun, Wenyu Liu, Robert H. Hurt, Kimani C. Toussaint Jr.   +4 more
wiley   +1 more source