Optical techniques are experimental and analytical methods that exploit the generation, manipulation, and detection of electromagnetic radiation in the ultraviolet, visible, and infrared ranges to probe material properties, structures, and dynamics. They encompass approaches such as absorption, fluorescence, Raman and elastic scattering measurements, interferometry, and imaging modalities that rely on well-defined light–matter interactions. These techniques enable quantitative characterization of refractive indices, absorption coefficients, energy level structures, molecular conformations, and nanoscale morphology, often with high spatial and temporal resolution. Optical techniques are widely integrated with spectroscopy, microscopy, and metrology platforms and can be implemented in both far-field and near-field configurations.
Researchers from National Taiwan University and collaborators have developed a novel way to observe and monitor carbon dioxide (CO2) conversion into carbon monoxide (CO) inside living cells, using an advanced optical method ...
Bio & Medicine
Apr 10, 2025
0
39
Rapidly increasing data traffic is placing ever greater demands on the capacity of communication systems. In an article titled "Ultra-broadband optical amplification using nonlinear integrated waveguides" published in Nature, ...
Optics & Photonics
Apr 9, 2025
0
102
Image quality often makes the difference between an amazing multimedia experience, like feeling immersed in a high-definition movie, and a visual letdown. When it comes to biomolecular imaging, the details matter even more. ...
Optics & Photonics
Apr 4, 2025
0
69
Eye tracking plays a critical role in the latest virtual and augmented reality headsets and is an important technology in the entertainment industry, scientific research, medical and behavioral sciences, automotive driving ...
Optics & Photonics
Apr 1, 2025
0
90
In the quest for next-generation energy, sensing, and pigment technologies, semiconducting metal oxides like titanium dioxide (TiO₂) have emerged as essential materials due to their abundance, stability, and intriguing photophysical ...
For decades, quantum imaging has promised sharper images and greater light sensitivity than classical methods by exploiting the unique properties of quantum light, such as photon entanglement. But the approaches to do so ...
Optics & Photonics
Mar 28, 2025
0
97
A research team affiliated with the Nano Optics Group within the Department of Physics at UNIST has announced the successful implementation of a plasmonic structure capable of precisely adjusting nanometer-sized gaps in response ...
Nanophysics
Mar 25, 2025
0
67
A moiré pattern appears when you stack and rotate two copies of an image with regularly repeating shapes, turning simple patterns of squares or triangles into a groovy wave pattern that moves across the combined image in ...
Nanophysics
Mar 24, 2025
0
61
Researchers at the University of California, Los Angeles (UCLA) have unveiled a new optical technology that enables precise focusing of light—only in one direction. This novel unidirectional focusing design uses structured ...
Optics & Photonics
Mar 24, 2025
0
56
A study led by the University of Portsmouth has achieved unprecedented precision in detecting tiny shifts in light displacements at the nanoscale. This is relevant in the characterization of birefringent materials and in ...
Optics & Photonics
Mar 20, 2025
0
137
