Optical materials and elements, considered as a physical system, comprise engineered media and components that manipulate electromagnetic radiation in the optical frequency range through controlled refraction, reflection, diffraction, absorption, and emission. This system includes bulk and nanostructured dielectrics, semiconductors, and metals configured as lenses, mirrors, prisms, gratings, filters, waveplates, and coatings, characterized by parameters such as complex refractive index, dispersion, nonlinear susceptibilities, and anisotropy. Their collective behavior determines wavefront shaping, spectral and polarization control, and spatiotemporal light propagation, underpinning the performance of optical assemblies in imaging, beam delivery, photonic integration, and laser systems.
Since the invention of the laser in 1960, nonlinear optics has aimed to broaden light's spectral range and create new frequency components. Among the various techniques, supercontinuum (SC) generation stands out for its ability ...
Optics & Photonics
Jan 13, 2025
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Researchers have chemically linked 2D materials using a molecular "velcro," resulting in a device with improved optoelectronic properties. The device, made of palladium nanosheets covalently bonded with MoS2, shows an enhanced ...
Nanophysics
Jan 13, 2025
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90
Every day, people are reaping the benefits of work by scientists and engineers to make more effective X-ray machines, computers, cell phones and televisions. Florida State University researchers are pushing the boundaries ...
Nanophysics
Jan 10, 2025
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72
Combining metallic glass with the Berreman mode of epsilon-near-zero (ENZ) thin films achieves a dual-function system for infrared camouflage and thermal management within an identical wavelength region of the atmospheric ...
Optics & Photonics
Dec 27, 2024
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64
Scientists from the National University of Singapore (NUS) have developed a highly effective and general molecular design that enables an enhancement in radioluminescence within organometallic scintillators by more than three ...
Optics & Photonics
Dec 24, 2024
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107
A global review of advancements in integrating metasurfaces—thin planar arrays of nanostructures—into optoelectronic devices highlights their potential to transform technologies such as light emitting diodes (LEDs), lasers, ...
Nanophysics
Dec 20, 2024
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113
Yongcui Mi has developed a new technology that enables real-time shaping and control of laser beams for laser welding and directed energy deposition using laser and wire. The innovation is based on the same mirror technology ...
Optics & Photonics
Dec 10, 2024
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62
Current laser technologies for the extended short-wave infrared (SWIR) spectral range rely on expensive and complex materials, limiting their scalability and affordability. To address these challenges, ICFO researchers have ...
Optics & Photonics
Dec 10, 2024
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95
As ultra-small nanoparticles with uniform sizes and well-defined structures, ligand-protected coinage metal nanoclusters show distinctive electronic structures and physicochemical properties in contrast to bulk nanomaterials ...
Nanomaterials
Dec 4, 2024
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23
Perovskites, materials with a crystal structure that mirrors that of the mineral calcium titanate CaTiO₃, exhibit properties that are advantageous for developing various technologies. For instance, they have proved promising ...
