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(Image credit: Benjamin Yuen)
The “shape” (expected intensity distribution) of a single photon emitted by an atom on the surface of a silicon nanoparticle.
Quantum

Quantum electrodynamics theory unveils precise ‘shape’ of a single photon

Dec. 2, 2024
New theory developed by Angela Demetriadou and Benjamin Yuen at the University of Birmingham in the U.K. explains how light and matter interact at the quantum level—at last!

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(Image credit: Red Pitaya)
Red Pitaya's STEMlab device can be used as an oscilloscope, signal generator, or spectrum analyzer.
Test & Measurement

Open-source measurement helps photonics companies scale

Dec. 2, 2024
The secret to consistent scaling? Embrace open-source tools for your measurements.
FIGURE 1. A misaligned lens inserted into a Bessel beam pre-aligned to an ASM.
Optics

Tabletop optical alignment: A nightmare for QED scientists (with a solution)

Nov. 27, 2024
Precision optical alignment is currently used for centering lenses within cells, but a call from a quantum computing company made us realize it would be more helpful to quantum...
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Podcasts

PODCAST: November 26, 2024 Light News

Nov. 26, 2024
Episode 27 of Following the Photons: A Photonics Podcast features our Light News photonics news roundup for November 26, 2024.

Learning Resources

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(Image credit: A. Stevens et al., Bioeng. Transl. Med.; https://doi.org/10.1002/btm2.10727)
H&E staining on rat brain coronal slices from all treatment conditions at three days post-injury and four weeks post-injury. Images were taken from frontal cortex, corpus callosum, and choroid plexus (body of the lateral ventricle).

(Image credit: Xuchen Wang/Aalto University)
“This work could lead to the first experimental realization of photonic time crystals, propelling them into practical applications and potentially transforming industries,' says Professor Viktar Asadchy from Aalto University, Finland.
(Image credit: Stephen Sweeney)
Cryogenic testing setup in Sweeney’s lab: A solar cell is held under cryogenic conditions (-196°C) while being powered by a laser.

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Photonics Hot List: November 22, 2024

Nov. 22, 2024
In this episode: novel cooling film via radiative cooling, DEEPscope ventures deep into the brain, and SPIE announces its 2025 Prism Award finalists.
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Photonics Hot List: November 15, 2024

Nov. 15, 2024
In this episode: microwaves could treat brain diseases, a silent amplifier boosts space communication, and the latest business mergers & acquisitions.
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Photonics Hot List: November 8, 2024

Nov. 8, 2024
In this episode: a tech shift boosts AI and data networks, the latest photonics business sales and acquisitions news, and self-healing chalcogenide glass.

Leadership in Lasers and Photonics

Welcome to Laser Focus World's Leadership in Lasers and Photonics program.