Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Ultrasound-induced gas bubbles in tissue can temporarily minimize optical scattering, enabling laser light to be focused at greater depth for higher-resolution imaging.
Several research groups have now succeeded in achieving lasing in free-electron lasers (FELs) driven by compact plasma wakefield accelerators. In the future, the approach may ultimately lead to a new breed of much smaller, more affordable FELs.
A 1,024 pixel superconducting nanowire single-photon imager over a detection area of 403.2 μm × 403.2 μm is demonstrated by introducing an orthogonal time–amplitude-multiplexing method. The spatial resolution and average temporal resolution are 12.6 μm and 67.3 ps, respectively.
Heavy atoms like Cl, Br and I introduced into thermally activated delayed fluorescence chromophores can increase the X-ray absorption cross-section. Light yield of ~20,000 photons MeV–1, detection limit of 45.5 nGy s−1 and imaging resolution of >18.0 line pairs per millimetre is demonstrated.
One-micrometre-thick OLEDs with low operating voltages of 5.11 V, 3.55 V and 6.88 V at 1,000 cd cm–2 for red, green and blue devices, respectively, and long lifetimes (55,000 h, 18,000 h and 1,600 h, respectively) are realized.
A Fourier-transform waveguide spectrometer is demonstrated by using HgTe-quantum-dot-based photoconductors with a spectral response up to a wavelength of 2 μm. The spectral resolution is 50 cm–1. The total active spectrometer volume is below 100 μm × 100 μm × 100 μm.
Researchers show that resonant coupling of light pulses with excitonic transitions affects the optimal time difference between pulses for sum-frequency generation and four-wave mixing in monolayer WSe2.
High-speed, high-resolution optics-based printing typically requires femtosecond pulsed lasers. We demonstrate optical printing using indigo-blue laser diodes and a red continuous-wave laser, achieving a peak printing rate of 7 × 106 voxels s–1 at a voxel volume of 0.55 µm3.
The use of on-chip nonlinear waveguides that can convert 1.5-μm wavelength signals into the 2-μm region brings new opportunities for expanding the bandwidth of optical communications.
A new series of self-assembled Pt(II) complexes with high emission quantum yields enables OLEDs with a maximum emission wavelength of 995 nm and an external quantum efficiency of 4.3%.
A single beamline interferometer with different two-photon N00N states is implemented through spatial tailoring of photon pairs. It enables the observation of the speed-up of the quantum Gouy phase — the phase acquired by the N-photon number state of paraxial modes upon propagation.
Organic LEDs based on acceptor–donor–acceptor molecules Y11, IDSe-4Cl and COTIC-4F are shown to be highly effective emitters of short-wave infrared light.
The demonstration that diamond nitrogen–vacancy centre technology can optically detect voltages with an impressive sensitivity could bring new opportunities for investigating neurobiology.
A combination of state-of-the-art temporal and spatial shaping techniques enables shaping pulsed laser light in all dimensions in a correlated manner, paving the way for new classes of on-demand space–time wavepackets.