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The observation of spin-dependent lateral displacements of anisotropic and inhomogeneous media with the naked eye is reported, allowing structured light–matter interaction to move from a scientific curiosity to a new asset for the optical manipulation toolbox.
A nonlinear charge oscillation driven by a 6 fs light field of 11 MV cm–1 is observed in a layered organic superconductor. The initial response time of the oscillation on the timescale of 10 fs clarifies that Coulomb repulsion is essential for the superconductivity.
Using high-temperature gas mixtures as the generation medium to increase the translational velocity of Xe atoms through the focus of a femtosecond enhancement cavity, phase-matched extreme-ultraviolet emission at a repetition rate of 77 MHz and with an average power of ~ 2 mW in a single harmonic order is achieved.
Near-infrared femtosecond laser pulses are sent to a Si or ZnO crystal to generate high-harmonic waves via static or transient field-induced optical nonlinearities. The beam profile of the high-harmonic emission is controlled by electronic methods.
Highly crystalline BaTiS3 has been shown to exhibit record-breaking birefringence of 0.76 in the wavelength range of 7–16 μm. The large anisotropy is a result of its quasi-one-dimensional structure.
Previous predictions that light radiated by modes around a bound state in the continuum (BIC) condition should exhibit a vortex in the far-field polarization profile are experimentally confirmed. The findings shed light on the origin of BICs.
The generation of gamma-ray flashes by dense ultra-relativistic electron beams travelling across a millimetre-thickness solid conductor is theoretically investigated. Peak brilliance above 1025 photons s−1 mrad−2 mm−2 per 0.1% bandwidth is expected.
A highly nonlinear optical response can be used to time-resolve light-induced phase transitions with few-femtosecond to sub-femtosecond accuracy, paving the way for time-resolving highly correlated many-body dynamics in strongly correlated systems with few-femtosecond accuracy.
By combining a chromatic focusing system with chirped laser pulses, the spatiotemporal distribution of the laser pulse is controlled in the focal region. The focal spot propagates over nearly 100 times its Rayleigh length at any velocity.
An impedance matching layer that enables perfect transmission of all-angle, broadband white light is proposed. The concept is experimentally demonstrated in the microwave regime.
Femtosecond X-ray Fourier holography imaging with record-high lateral resolution below 20 nm is demonstrated. Phase information is encoded into the interference of the diffraction patterns of a reference particle with a measurement sample.
Enhanced nonlinear response of 50-nm-thick antennas in the vicinity of an epsilon-near-zero material enable an optically induced refractive index change of ±2.5 over a 200 nm spectral range.
A spatial resolution of 30 nm (=λ/31) exceeding the diffraction limit is achieved by super-resolution fluorescence microscopy. The nanoscopic imaging scheme can be applied to coherent quantum-mechanical systems such as quantum dots, as well as colour centres.