Test & Measurement

Credit: Ommatidia LiDAR
Ommatidia LiDAR’s Q2 laser radar deployed for noncontact field measurement.
Photonic integrated circuits enable a measurement architecture that turns parallel optical sensing into a usable engineering tool with faster setup, broader spatial awareness,...
July 14, 2026
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Following the Photons: A Photonics Podcast
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
Working principle of the Fourier-optics-based angle-resolved imaging spectrometer.
June 25, 2026
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Following the Photons: A Photonics Podcast
June 16, 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
Credit: Wolf/TU Graz
Birgitta Bernhardt in the lab with the retroreflector counterpart to her mobile UV dual-comb spectrometer.
June 11, 2026
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Following the Photons: A Photonics Podcast
June 10, 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

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