Traditional objective lenses in modern microscopy, based on the refraction of light, are
restricted by the Rayleigh diffraction limit. The existing methods to overcome this limit can be …

Needle beams are highly attractive for applications which take advantage from a spatial and
temporal localization of photons. High intensities, high resolution and extended depth of …

We theoretically propose the realization of a three-dimensional (3D) spin Hall effect (SHE) of
light by tightly focusing a linearly polarized light. Owing to the spin-orbital interaction in …

Structured light, also known as tailored light, shaped light, sculpted light, or custom light,
refers to a series of special light beams with spatially variant amplitudes and phases …

Optical hollow beams are suitable for materials processing, optical micromanipulation,
microscopy, and optical lithography. However, conventional optical hollow beams are …

As a class of integer-order vector beams, hybridly polarized vector beams (HPVBs) are
widely used in focus sha**, femtosecond laser filamentation, linear and nonlinear …

A versatile method is presented for the creation of ultra-long subwavelength light needles
with high-purity longitudinal polarization, uniform light tunnels of variable length and with …

Combining the advantages of phase and amplitude modulation, we designed a dual-ring
cosine filter which was consisted by an inner and outer ring, and the two rings have different …

A high NA Fresnel zone plate (FZP) is studied using vectorial angular spectrum theory for
realizing the sharpest possible super-Gaussian optical needle with purely longitudinal …

A scheme for vector terahertz (THz) beam generation is proposed. A subwavelength metal
grating is utilized to adjust the polarization of the THz radiation. The amplitude and phase …