Inverse design of nanophotonic devices enabled by optimization algorithms and deep learning: recent achievements and future prospects
Nanophotonics, which explores significant light–matter interactions at the nanoscale, has facilitated significant advancements across numerous research fields. A key objective in this area is the design of ultra-compact, high-performance nanophotonic …
Theoretical understanding of water splitting by analyzing nanocatalyst photoabsorption spectra
Photons can be used to either monitor or induce catalysis by acting as photoexcited holes or quasi particles, which aid in water splitting reaction leading to a major step towards sustainable energy. However, the mechanism of catalysis using nanocatalysts …
A novel intelligent photonic design method enabled by metamaterials and k-nearest neighbor
The utilization of metamaterials plays a pivotal role in integrated photonics. The precise design of metamaterials enables them to finely manipulate light, resulting in an ultra-compact footprint and exceptional performance that cannot be achieved by …
Silicon photonic modulators with a 2 x 1 Fabry–Perot cavity
Silicon photonics modulators based on a 2×1 Fabry–Perot (FP) cavity, which is circulator-free, are proposed and demonstrated by introducing two asymmetric multimode-waveguide grating (AMWG) reflectors and a short straight modulation section with interleaved …
Polarization-controlled metasurface for simultaneous holographic display and three-dimensional depth perception
Simultaneous optical display and depth perception are crucial in many intelligent technologies but are usually realized by separate bulky systems unfriendly to integration. Metasurfaces, artificial two-dimensional optical surfaces with strong light–matter …
Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period
When microspheres are illuminated by tightly focused vortex beams, they can be trapped in a non-equilibrium steady state where they orbit around the optical axis. By using the Mie–Debye theory for optical tweezers, we demonstrate that the orbital period …
Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps
It is generally recognized that there is only a single optical potential-well near the focus in optical traps with a focused Gaussian beam. In this work, we show that this classic Gaussian-beam optical trap has additional optical potential-wells for optical …
Quantum control in size selected semiconductor quantum dot thin films
We introduce a novel technique for coherent control that employs resonant internally generated fields in CdTe quantum dot (QD) thin films at the L-point. The bulk band gap of CdTe at the L-point amounts to 3.6 eV, with the transition marked by strong Coulomb …
Submicron quantum dot light-emitting diodes enabled by pixelated topological meta-mirror
As a highly competitive display technology, the realization of pixelated full color quantum dot light emitting diodes (QLEDs) is an indispensable step for high resolution display. Meanwhile, with the rise of near eye display, a submicron pixel size is …
Label-free (fluorescence-free) sensing of a single DNA molecule on DNA origami using a plasmon-enhanced WGM sensor
The integration of DNA origami structures with opto-plasmonic whispering gallery mode (WGM) sensors offers a significant advancement in label-free biosensing, overcoming the limitations of traditional fluorescence-based techniques, and providing enhanced …
Second harmonic generation from bound-state in the continuum-hosted few-layers van der Waals metasurface
Monolayer transition metals dichalcogenides (TMDs) have been coupled to bound-state in the continuum (BIC) hosted dielectric structures to attain high second harmonic generation (SHG). However, the transvers electric modes are strongly localized in the …