Refractive index—the ratio of the speed of electromagnetic radiation in a medium to its speed in a vacuum—can be modulated fast enough to generate photonic time crystals (PTCs) in the near-visible part of the spectrum, ...
Optics & Photonics
Jul 7, 2023
0
1327
A team of photonics and electronic engineers at Kyoto University has found a way to overcome the shortcomings of photonic-crystal surface-emitting lasers (PCSELs) that have prevented their use in industrial-scale cutting ...
Researchers have developed a new smaller, lighter design for space-based imaging spectrometers with high spectral resolution. These high-dispersion imaging spectrometers could be used onboard spacecraft or satellites to study ...
Optics & Photonics
May 15, 2023
0
35
Our industrialized society releases many and various pollutants into the world. Combustion in particular produces aerosol mass including black carbon. Although this only accounts for a small percentage of aerosol particles, ...
Environment
May 10, 2023
1
71
Modern-day technologies like optical computing, integrated photonics, and digital holography require light signals to be manipulated in three dimensions. To achieve this, it is necessary to be able to shape and guide the ...
Optics & Photonics
Apr 22, 2023
1
358
Researchers from the Universidad de Santiago de Chile and the University of Notre Dame, working with machine learning, have devised a method to identify organic compounds based on the refractive index at a single optical ...
A new way to create high-energy ions could speed up their applications in treating cancer and probing the fundamental nature of matter.
Optics & Photonics
Mar 13, 2023
0
89
A new purpose-built microscope has been developed that uses the complex properties of UV light to improve image resolution and contrast. Most cells are transparent at visible wavelengths, which means the imaginary component ...
Optics & Photonics
Mar 6, 2023
0
21
Robots and autonomous cars will have eyes that see much more than the human eye is capable of, a review of the growing field of meta-optics has found.
Optics & Photonics
Dec 22, 2022
3
253
Hyperspectral surface plasmon resonance microscopy (HSPRM) is an advanced analytical technique for spectral imaging and chemical and biological sensing, which enables high-resolution visualization and precise quantification ...
Biochemistry
Dec 1, 2022
0
204
