Lasers & Sources

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Following the Photons: A Photonics Podcast
This episode of Following the Photons: A Photonics Podcast features our Light News photonics news roundup for July 7, 2026.
July 7, 2026
FIGURE 1. Top: An OFC generated by a modelocked laser. Bottom: A periodic pulse train in the time domain corresponds to a series of discrete frequencies in the frequency domain. The frequency comb is shifted in frequency space by a carrier-envelope offset frequency fceo, which arises from the carrier envelope phase slip Δφ between successive pulses. Apart from this offset, the comb consists of equally spaced spectral lines separated by the repetition rate frep.
July 1, 2026
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Following the Photons: A Photonics Podcast
June 30, 2026
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June 17, 2026
Credit: Zheru Qiu/EPFL
Zheru Qiu and colleague Xuan Yang in the lab with the team’s on-chip ultrafast laser.
June 12, 2026
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Following the Photons: A Photonics Podcast
June 2, 2026
Credit: Caroline Perron
Pierre Luc Thériault, a Ph.D. student in engineering physics, aligns the team’s experimental setup.
June 2, 2026
Credit: Isaac Nape
Light Mkhumbuza, a graduate student at Wits University’s School of Physics, who ran the team’s experiments.
June 1, 2026
Credit: Vahala Lab/Caltech
Researchers at Caltech designed an approach for guiding light on silicon wafers with low signal loss comparable to that of optical fiber at visible wavelengths, which paves the way for a new generation of PICs.
May 29, 2026

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