Reviews & Analysis

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  • The demonstration of a low-loss diamond mirror cavity that can temporally store X-ray pulses brings hope for a future generation of X-ray free electron lasers.

    • Enrico Allaria
    • Giovanni De Ninno
    News & Views
  • Platforms enabling control over strong light–matter interactions in optical cavities provide a challenging but promising way to manipulate emergent light–matter hybrids. Spin selectivity of transitions has now been demonstrated in a two-dimensional hole gas microcavity system, paving the way towards the study of new spin physics phenomena in hybrid excitations.

    • Hrvoje Buljan
    • Zhigang Chen
    News & Views
  • Vibrations of individual molecules are difficult to detect due to thermal noise. In a recent report, researchers overcome this challenge, upconverting mid-infrared photons into visible light using nanophotonic cavities. The result is high-efficiency optical readout for single-molecule vibrational spectroscopy.

    • Matthew Sheldon
    News & Views
  • The interaction of terahertz waves with novel materials is bringing rich physics and new opportunities for applications.

    • Oliver Graydon
    Meeting Report
  • Precise measurements of the length of an Earth day are essential for understanding global mass transport phenomena. A ring laser gyroscope provides absolute measurements of variations in the length of the day with a resolution of 5 parts per billion over a 14-day period.

    • Caterina Ciminelli
    • Giuseppe Brunetti
    News & Views
  • The laser community returned to Prague to celebrate science and to be connected, in person, again, while high-power lasers were in the limelight.

    • Rachel Won
    Meeting Report
  • A diffractive axicon (a device that diffracts the input light pulse radially) enables complex correlations between the topological charges and the frequencies of ultrashort laser pulses, resulting in a variety of ultrashort coiled light structures.

    • Spencer W. Jolly
    News & Views
  • Researchers have developed efficient electro-optic tools for manipulating the time and frequency of single photons by taking inspiration from Fresnel lenses.

    • John M. Donohue
    News & Views
  • The introduction of a two-step deconvolution workflow maximizes the detection of fluorescence in fluctuation-based super-resolution imaging, enabling a square millimetre field of view to be captured in as little as ten minutes.

    • David Baddeley
    News & Views
  • The authors discuss the opportunities and challenges facing underwater photovoltaics.

    • Jason A. Röhr
    • B. Edward Sartor
    • André D. Taylor
  • A transmission electron microscopy technique enables movies of optical near-fields to be recorded with a temporal resolution faster than the oscillation of optical electric fields.

    • Yuya Morimoto
    News & Views
  • Contrary to intuition, photons do not have to be indistinguishable for maximum photon bunching to occur. Partially indistinguishable photons can exhibit pronounced bunching.

    • Andrea Crespi
    News & Views
  • A lithography-free photonic processor through dynamic control of optical gain distributions is demonstrated, allowing reconfigurable photonic neural networks and more efficient signal processing, and showing great promise in easing data traffic as well as accelerating information processing speeds.

    • Anna P. Ovvyan
    • Wolfram H. P. Pernice
    News & Views
  • Developing cost-efficient, reusable, sensitive, in situ online detection systems for radioactive gases remains challenging. Now researchers show that scintillating metal–organic frameworks can provide a high-performance detector solution.

    • Hong-Tao Sun
    • Naoto Shirahata
    News & Views