Optical coherence tomography (OCT) is a light-based imaging technique currently used in clinical diagnostics to examine organs in vivo. The technique uses interferometry; in which light reflected from an examined object combines ...
Most lasers emit photons of exactly the same wavelength, producing a single color. However, there are also lasers that consist of many frequencies, with equal intervals in between, as in the teeth of a comb; thus, they are ...
Optics & Photonics
Dec 11, 2018
0
234
A KAIST team developed an optical technique to change the color (frequency) of light using a spatiotemporal boundary. The research focuses on realizing a spatiotemporal boundary with a much higher degree of freedom than the ...
Optics & Photonics
Nov 29, 2018
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22
Electronic systems using light waves instead of voltage signals is advantageous, as electromagnetic light waves oscillate at petaherz frequency. This means that future computers could operate at speeds 1 million times faster ...
Nanophysics
Nov 27, 2018
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219
Reseachers at ETH Zurich have developed a modulator with which data transmitted via millimetre waves can be directly converted into light pulses for optical fibres. This could make covering the "last mile" up to the internet ...
Optics & Photonics
Nov 21, 2018
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40
University of Michigan physicists have led the development of a device the size of a match head that can bend light inside a crystal to generate synchrotron radiation in a lab.
Optics & Photonics
Oct 25, 2018
1
253
A new instrument to search for potentially habitable/inhabited planets has started operation at the Subaru Telescope. This instrument, IRD (InfraRed Doppler), will look for habitable planets around red dwarf stars. Astronomers ...
Astronomy
Jul 2, 2018
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18
University of Adelaide researchers have created a laser that can "smell" different gases within a sample.
Optics & Photonics
Jun 7, 2018
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28
Atomic clocks are no longer based on a microwave transition in cesium, instead operating with other atoms that are excited using optical frequencies. Some of these new clocks are portable. At its QUEST Institute, PTB is currently ...
Optics & Photonics
Jan 23, 2018
0
25
Brown University researchers have developed a new method of manipulating the polarization of light at terahertz frequencies.
Optics & Photonics
Jul 19, 2017
0
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