We perform resonant spectroscopy of erbium implanted into nanophotonic silicon waveguides, finding 1 GHz inhomogeneous broadening and homogeneous linewidths below 0.1 GHz. Our study thus introduces a ...

We present design concepts for optical modulators without using any equalization or bespoke fabrication techniques. The demonstrated silicon photonics transmitter can operate at 100 Gbps OOK, while th...

We realize a dielectric metasurface that enables full-color generation and ultrasmooth brightness variation. The reproduced artwork “girl with a pearl earring” features photorealistic color representa...

We propose a polarization-insensitive ultra-broadband mode filter based on a 3D graphene structure buried in a few-mode optical waveguide. Our experimental device fabricated by burying an L-shaped gra...

A critical challenge of pump-probe experiments with x-ray free-electron lasers (XFELs) is accurate synchronization of x-ray and optical pulses. At the European XFEL we observed megahertz rat...

We solve one of the key photonic challenges–bringing wafer-scale electrically pumped optical sources to a silicon nitride photonic platform with the world’s first demonstration of electrically pumped ...

Here we demonstrate a spectrally broadband, gigahertz-fast Mach–Zehnder interferometric modulator exhibiting a miniscule ${{\rm V}_\pi }{\rm L}$ V π ...

Flat lenses enable thinner, lighter, and simpler imaging systems. However, large-area and high-NA flat lenses have been elusive due to computational and fabrication challenges. Here we appli...

Picosecond-scale laser–matter interactions using compound parabolic concentrators have demonstrated strongly relativistic ponderomotive effects with $\sim{10} \times $ ∼ ...

We demonstrate a novel ${\rm III} {\text -} {\rm V}/{\rm Si}/{{\rm Si}_3}{{\rm N}_4}$ I I I - V / ...

We combine nanophotonics and cold atom research in a new apparatus enabling the delivery of single-atom tweezer arrays in the vicinity of photonic crystal waveguides....

We demonstrate that rapidly switched high- Q metasurfaces enable spectral regions of negative optical extinction....

The generation of three-cycle multi-millijoule pulses at 318 W power is reported by compressing pulses of a Yb-fiber chirped pulse amplifier in a 6 m long stretched flexible hollow fiber. This techniq...

We demonstrate quasi-phase-matched frequency conversion in a chip-integrated lithium niobate microring resonator, whose normalized efficiency reaches 230,000%/W or 10−6 per single photon....

We use optical trapping to deliver molecular targets to the vicinity of a nanopore for high-throughput single molecule analysis on an optofluidic chip. DNA detection rates increase over 80× to enable ...

The number of ultrasound detectors required to produce photoacoustic tomography images can be reduced significantly by fully enclosing the imaging target in an acoustically reverberant cavity and expl...

We present a compact, Kerr-lens mode-locked oscillator consisting of a three-element optical setup and demonstrate femtosecond pulse generation at a repetition rate of 23.8 GHz....

We report a few-cycle, super-octave, polycrystalline Cr:ZnS laser system with 4 W power at 78 MHz repetition rate, where all of the necessary optical signals for the measurement of the carrier–envelop...

We demonstrate resonant excitation of quantum emitters in gallium nitride (GaN). The emitters are stable under non-resonant excitation and exhibit nearly Fourier-transform-limited lines of ...

Soliton microcombs with repetition rates as low as 1.86 GHz are demonstrated, thereby entering a regime more typical of table–top combs. Low rates are important in spectroscopy and relax requirements ...