Test & Measurement

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Celebrate innovation in optics, photonics, and quantum by entering the Laser Focus World Innovators Awards.
Aug. 3, 2026
Credit: ESA
FIGURE 1. LISA will use three spacecraft separated by ~2.5 million kilometers to exchange laser beams and detect low-frequency gravitational waves.
July 31, 2026
Credit: STMicroelectronics
Combined multi-zone distance and infrared monitoring enhance flexibility to design powerful system features.
July 20, 2026
Credit: Thomas Walker
To build a quantum sensor, light must be prepared in a carefully controlled state where its frequency, polarization, and intensity are well controlled. The polarization of blue light is altered before it’s used to cool the atoms to near absolute zero.
July 16, 2026
Credit: Ommatidia LiDAR
Ommatidia LiDAR’s Q2 laser radar deployed for noncontact field measurement.
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

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